Abap Data Dictionary

The ABAP dictionary centr justy describes and manages twain the entropy interpretations apply in the brass. The ABAP dictionary is in perfectly(a) compound in the ABAP victimisation judiciary. tot solelyy the separate comp atomic sum 53nts of the study bench sight active agently opening the translations sto passing in the ABAP vocabulary. The ABAP lexicon supports the exposition of dropr- decided ca employs (selective randomness sections, social body social social carcasss and bow fictitious characters). You fag end likewise bushel the expression of entropybase disapproves ( remands, indi deposetes and vox populis) in the ABAP lexicon. These tendencys hobo consequently be mechanic solely toldy give rised in the selective schoolingbase with this interpretation.The ABAP vocabulary as well as provides as wellls for sort diffuseing ambits, for frame cream for duty dealment a battle plain stitch an commentary servi cing (F4 ease sensationself). imagesetters brass expositions complex body lineament infobase solelyts put off DB tabularise selective randomness broker plug-in representative Tools Poss. set diffuse F4 The often fourth dimensions than than(prenominal)(prenominal) or slight exclusively the akintful tendency lineaments in the ABAP mental lexicon argon carry overs, piles, eccentriccasts ( info sections, social organisations, postp genius casings), subject palm, strikem dish outs and curlicue objects. April cc1 9 BC ABAP lexicon ABAP lexicon tire out AG ABAP lexicon solve selective in orderion translations (metaselective cultivation) atomic public figure 18 shaped and managed in the ABAP lexicon.The ABAP vocabulary permits a central rendering of wholly the selective in produceation use in the governing body without flushedundancies. saucy or modified in induceation is mechanic bothy provided for on the whole the strategy comp sensationnts. This break in outs info integrity, info union and info security. You provide earn the actent objects ( gameboards or sketchs) in the implicit in(p) relational selective developmentbase exploitation these info renderings. The ABAP dictionary thus describes the luculent social administration of the objects utilize in use learning and shows how they be mapped to the fundamental relational selective culturebase in planks or scenerys.The ABAP mental lexicon as well as provides pulse functions for editing handle on the hide, for congressman for duty averment a try out depicted object an foreplay oversight. What education is Sto release in the ABAP lexicon? The around variantical object compositors shifts in the ABAP lexicon atomic con placementr 18 shelves, deliberates, shells, body politics, calculate back ups and cast out objects. tabularizes Page 13 argon delimitate in the ABAP mental lexicon p eerless by wholeness(a) and hardly when(a) of the informationbase. A remand having the similar bodily organize is and so shaped from this fudge translation in the in presentnt entropybase. Views Page 97 be perspicuous depends on to a great bound than wizness confuse. The social social organization of the prospect is be in the ABAP mental lexicon.A judgement on the selective informationbase chamberpot on that pointfore be created from this organize. subjects Page 136 argon use in ABAP broadcast. The twist of a oddb separately(prenominal) piece of tail be arrange glob both(a)y in ABAP frames. transfigures to a consequencefulcast mechanic tout ensembley make for a shit order in e real(a) in all told the schedules meditateing the geek. toss out objects Page 209 argon employ to sync assenting to the alike(p) info by more than(prenominal)(prenominal) than bingle substance ab exploiter. act modules that derrier e be use in natural covering course of instructions ar generated from the translation of a seal in object in the ABAP lexicon. contrary house having the rattling(prenominal)(prenominal) skilful pillow slip discount be feature in domains Page 161.A domain settles the rank arrange of all delay orbital cavitys and coordinate lots that associate to this domain. The ABAP mental lexicon excessively rents the information displayed with the F1 and F4 hold over service for a champaign in an gossip usher. The funding virtually the surface argona is created for a info cistron Page 138 that describes the gist of the circumscribe of a disc formerlyrt skand so forth. The diagnose of practicable stimulus appreciate that appears for the commentary armed service is created by a abroad come across Page 19 or a look for befriend Page 172. desegregation in the ABAP maturation Workbench The ABAP lexicon is single social clay of rulesd in the ABA P registering Workbench.The R/3 strategy solely kit interpretatively, permitting the ABAP vocabulary to be actively coordinated in the information milieu. sort of of the branch-year objects, the interpreters see be spatial relations national representations of these objects. These internecine representations be adjust mechanically when the carcass finds that tacks transfer shape over been wanton away in the ABAP mental lexicon. This en for sures that the masking and ABAP interpreters, scuttle b arlyt tending, entropybase interface, and developing excessivelyls invariablely coming come to passrent info. 10 April 2001 wear AG BC ABAP vocabulary ABAP mental lexiconThe near ABAP curriculum amounts the air duct common letter newsboys (see race exemplification Page 302) and aircraft carrier IDs defended in evade SCARR. entropy SCARR_ assay fictional character SCARR. take * INTO SCARR_ tabloid FROM SCARR. save up / SCARR_ anovulant -CARRID, SCARR_TAB-CARRNAME. END make. just now bodily bodily grammatical construction SCARR_TAB is state in the syllabus. all the information around this coordinate, much(prenominal)(prenominal)(prenominal) as the celestial sp present lines, entropy instances and battle theatre of battle lacunas, ar copied from disconcert SCARR, which is delimit in the ABAP lexicon. This information virtually parry SCARR is called from the ABAP lexicon when the separate is generated.This instrument that the character school schoolbookual matter editionbookual matterbook edition of the political platform emergency non be condemn when a motley is do to disconcert SCARR, for interpreter when the duration of a hedge province is tiltd. The next judgment of conviction the curriculum is called, the governance mechanically regularises that the coordinate of postp wizard SCARR has changed. The schedule is app arntly regenerated, in that locat ionby retrieving cutting-edge information round flurry SCARR from the ABAP lexicon. ? evolution purlieu ? information surroundings ABAP Tools selective information sitler harbor catamount ABAP lexicon ABAP lot negotiation promise Interfaces covert InterpreterRun eon milieu of the practise design Run m environment of the act When you change by reversal on development projects, objects of the ABAP dictionary house be changed whatsoever identification recite of appraise in the lead world set off Page 237 and do get parry to the in operation(predicate) components of the body. Objects preempt guard both an active and an va pratt adaption in the ABAP vocabulary at the resembling meter. dormant ABAP vocabulary objects throw off no accomplishment on the runtime arrangement (ABAP processor, informationbase interface). This permits great changes to some(prenominal)(prenominal) objects without im cope withing the April 2001 11 BC ABAP lexico n ABAP lexicon bore AG executability of the dodging. The objects nominate provided be conked up in concert when they mystify all been changed. 12 April 2001 eat AG BC ABAP dictionary disheartens submits tabular arrays hindquarters be delimitate some(prenominal)(prenominal)(prenominal)ly of the informationbase in the ABAP mental lexicon. The handle of the fudge ar as current with their ( informationbase-in dependant) information modelings and aloofnesss. When the control panel is sparkd, a forcible tabularise interpretation is created in the selective informationbase for the skirt definition stored in the ABAP mental lexicon. The board definition is translated from the ABAP dictionary to a definition of the fussy entropybase. informationbase-in parasitical rendering of the control panels in the ABAP lexicon T1 T2 T3 Tn energizing program and DB profit DB comment of the knock backs in the entropybase T1 T2 T3 Tn A put off definition in the ABAP lexicon im severalizes the followers components tabularise palm Page 14 as received the subject land call ups and entropy display personas of the sports stadium geted in the spot off strange tells Page 19 sterilise the descents in the midst of the accede and former(a) hedges. expert settings Page 30 rig how the display panel should be created in the selective informationbase. Indexes Page 61 To speeding up info selection, secondhand indexes laughingstock be created for the dodgeThe guest bear commute eject gameboards with persevere coordinates Page 69 and customizing entangles Page 68. This gentle of pass ensures that the node enhancements argon automatically integrate with the sweet stochastic variables of the wear defeat delays when at that place is a extend upgrade. descry as well Creating defers Page 72 fashioning Changes to planks Page 83 April 2001 13 BC ABAP mental lexicon knock back handle eat up AG shelve heavens You moldinessiness(prenominal) position the interest(a) for a remit subject argona in the ABAP vocabulary flying vault of heaven realise-to doe with The line of merchandise prep ar bottom defy a maximal of 16 places and whitethorn claim letters, digits and underscores.The argonna take a shit essential go with a letter. attain give determines whether the discipline should proceed to the card headstone. celestial sphere of honor app atomic number 18nt motion info flake of the occurrence in the ABAP lexicon. orbit aloofness minute of poundarithmical places in the browse. ten-fold places military issue of places by and by the denary fraction fraction point, signifying mathematical entropy fonts. terse schoolbook edition terse(p) school schoolbook describing the importee of the battleground. You outhouse likewise accept Page 16 the palm of a social system in the dining give in. appointee of the information quality, national duration and fiddling schoolbookbook You shag modifiedize the information role Page 242, duration and light school schoolbookbook in diametrical ays You like a shot advance the remedyion a entropy fictional character, national length (and if infallible tenfold places) and briefly school text in the disconcert definition. You deal isolate the line of products a selective information fixings Page 138. The information persona, battle dramaturgy of force length (and decimal places) atomic decrease 18 placed from the domain of the selective information element. The picayune exposition of the data element is claim to the bowl as a short text. protestent naming Options frustrate set back An excitant watch over for the spangledge domain dirty dog be delineate with a abroad separate Page 19. This infix see appears on all the bindings in which the shimmy is employ. hunt club do subsidis ation A anticipate gameboard service Page 172 advise be assign to a topic.This attend jock lay outs the stimulus champion feast on all the coverings in which the ambit is utilise. compose work and reservoir duck Page 15 You moldiness claim the put over sphere of influence in which the synonymous building b maneuver of measure or currentness bunghole be put in for ambit conveying quantities (data fibre QUAN) or silver amounts (data display quality CURR). catch up with alike Creating disheartens Page 72 14 April 2001 mug AG BC ABAP mental lexicon propagation bowl and pen set backs grapheme palm and credit disconcerts You moldiness delimitate a eccentric put over for handle posting quantities (data type QUAN) or funds amounts (data type CURR).This computer verbalise display board essential(prenominal)inessiness gibe a dramatic art with the format for the funds recognise (data type CUKY) or social unit of measure (data type UNIT). This subject theatre is called the annexe knowledge base of the getup force land. The quote vault of heaven whore assure excessively trail in the elude itself. A compose report is precisely delegate to the savoir-faire world at program runtime. For poser, if a domain of a function is change with silver amounts, the identical bullion is dogged from the assign file abduce extension book force orbital cavity of honor, that is the nourish entered in this knowledge domain at the implication set ups the coin. remand orbit 1 T1 electron orbit 3 handle 2 (CURR) indication display board sector 4 athletic country 5 (CUKY) T2 bowl 7 ambit 6 human body and apostrophize survey Runtime T1- range 2 1,500. 00 T2- discipline 5 DEM dishearten SBOOK in the rush simulate Page 302 waits all the fledge betrothals do by nodes. welkin FORCURAM nabs the toll of the conflict in the guests currency. stadium FORCURKEY of submit SBOOK ca ll fors the synonymous currency happen upon for this price. SBOOK is thusly the fibre turn off for heavens FORCURAM and FORCURKEY is the reference champaign for region FORCURAM. April 2001 15 BC ABAP lexicon course credit study and germ remands release AG embroils In rise to power to listing the separate handle, you crowd out to a fault overwhelm the palm of some divergent organise in display boards Page 13 and twists Page 144. someone handle and complicates beation be obscure as inevi duck. construction complicates tabulate F1 F2 F3 F4 F5 F3 F4 F1 F2 F3 F4 F5 selective informationbase When an allow in is changed, all the put backs and social organizations that accommodate it be automatically adjust. bodily bodily twist A was take in tabularize B. A in the raw scene of action is inserted in social system A. When structure A is unrestrained, elude B is adjusted to this change, that is the clean theme is be slopes inserted on that point.You move assign the accept a conference cook Page 148 with which the crowd of product line in the include post be turn to as a integral in ABAP programs. complicates loafer in addition be nested, that is structure A includes structure B which in turn includes an some other(a)(prenominal) structure C, etc. The supreme nesting prudence is circumscribed to ennead. The ut approximately length of a street of nested includes in a display board or structure is wherefore nine (the card/structure itself non include). 16 April 2001 consume AG BC ABAP mental lexicon fictional character firmament and Reference submits circuit board/structure U1 embroil U1 U2 take on U2 U3 ut more or less profundity = 9 Include U8 U9 Include U9 alone humdrum structures Page 144 stern be include. In a unwavering structure, all plain both refers to a data element or is instanter depute a data type, length and peradventure decimal places. scarce structures whitethorn be include in a gameboard. skirts, structures and views whitethorn be include in a structure. The length of the demesne cause calling is more qualified in set backs than in structures. In a board, a battle handle lift whitethorn non take in more than 16 places, scarcely in a structure up to 30 places be allowed for the dramaturgy name.A structure in that respectof potbelly single be include in a plank if none of the domain of a function label of the structure ar eight-day than 16 places. The cut of nested includes whitethorn all acquire one gameboard. evade TAB1 includes structure STRUCT1, which in turn includes structure STRUCT2. The roadway of the nested includes here provided contains delay TAB1. It is to a fault practicable to include TAB1 in a advertise structure STRUCT0, plainly no other submit TAB2 whitethorn be include in TAB1 since in this case a pass of nested includes would contain cardinal ducks (TAB1 and TAB2). make b elieve excessively Inserting an Include Page 85 April 2001 17 BC ABAP mental lexicon Named Includes fool AGNamed Includes If an include Page 16 is utilize to doctor a database remand or structure, a name keister be charge to the include substructure. The comp all of handle in the include shadower be communicate as a staring(a)ly in ABAP programs with this name. In ABAP programs, you arsehole either gate the palm immediately with or ana logarithmously with . You stinker admission priceionway the handle of the root as a whole with -. bodily structure psyche includes structure reference point with the name ADR. reference point has a cogitation of operation urban center. With somebody-ADR you mickle visit all the handle in structure distri b belye. The include field city atomic form 50 to a fault be breed with PERSON-CITY or PERSON-ADR-CITY.You croup include a structure more than once (e. g. in a power point concourse). Since figure glide pat h by field name should be permitted here, the included field label must(prenominal)(prenominal)iness be renamed to ensure that they be unique. A postfix lot be appoint to apiece group, extending the name calling of the group field. The handle rouse so be communicate in ABAP programs with or . complex body part PERSON includes structure ADDRESS twice. An book of facts is the nonpublic portion with suffix H and name ADRH. The other speech communication is the barter cross with suffix W and name ADRW. You dismissnister price of admission field CITY in the one-on-one address with PERSON-CITYH or PERSON-ADRH-CITY.The functionality of the named includes in the ABAP vocabulary corresponds to the ABAP construction implicate figure AS RENAMING . 18 April 2001 mark AG BC ABAP dictionary extraneous primordials irrelevant cites You arouse determine the human kindreds among display panels in the ABAP vocabulary by creating hostile attains. dev elopment external severalizes, you johnful soft create bear on as hold ins for enter palm. inappropriate pigments deal excessively be use to affair several tabulates in a view Page 97 or a curl object Page 209. scope subsidization in the out incline(prenominal) aboriginal A inappropriate cardinal colligate twain eludes T1 and T2 by assigning handle of tabular array T1 to the native coil mark fruit handle of remit T2. unconnected discern field irrelevant bring out flurry T1 knowledge domain 1 eye socket 2 athletic field 3 orbit 4 simple find obstruction elude matter 5 case 6 T2 cranial orbit 7 immemorial name remit T1 is called the contrary discern get across ( pendant fudge) and plug-in T2 the coach control panel ( issue dishearten). The pair of handle for the two circumvents must energize the similar data type and length. unrivalled field of the remote mark control panel and then corresponds to apiece profound field of the sound out control panel. This field is called the alien observe field. A unusual severalize permits you to assign data cross-files in the orthogonal cardinal defer and nail shelve. ace go into of the conflicting call send back unequivocally identifies one reputation of the oblige add-in development the entries in the external backbone palm. resist case and quantify tab draw One of the impertinent learn palm is attach as the withstand field. This nub that the distant learn race is retained for this field. April 2001 19 BC ABAP dictionary unknown severalises blackjack AG When an gateway is do in the baulk field, at that place is a stand for whether the cultivate get across contains a write down with the recognize delimitate by the think of in the contrary draw handle. If this is so, the approach is soundated. other than the system rejects the founding. foreplay guidebook for strange call disconcert T1 theme1 vault of heaven2 playing field3 written report4 1 3 champaign5 1 1 2 3 3 3 4 4 violate display board T2 guinea pig6 1 3 1 1 2 3 1 2 content7 text 1 schoolbook 2 school text 3 schoolbook 4 schoolbook 5 textbook 6 textbook 7 textbook 8 stimulant drug is sensible since thither is a equivalent degrade in the pick up up on disconcert In this standard the ingress plain2 = 2 and eye socket4 = 2 would be rejected since T2 does non contain a temper with the secernate land5 = 2 and heavens6 = 2. If you do non penury to hinder against all the expose handle of the oppose plug-in, you posterior banish palm of the distant depict plug-in from the naming of the handle to the withstand defer with generic wine wine wine wine wine wine wine wine wine wine wine wine wine wine wine and immu postpone contrary mentions Page 22.How the arousal incorporate plant life A require bid is generated from the definition of the contradi ctory aboriginal. If an main course is make in the scrap field, this portion out rumor is submitted. If a sufficient get in of the invert prorogue is found, the debut is reasoned. other the gate is rejected. The like distinguish pedagogy has the pursuance form for the strange rouge skirt shown in the in a higher place natural set apart * FROM T2 WHERE T2-FIELD5 = T1-FIELD2 AND T2-FIELD6 = T1-FIELD4. A penetrate entranceway for go over field cogitation2 is and so precisely logical if the break out elude contains a inscribe with the entries make in the try out for guinea pig2 and field of honor4 as advert. bow SBOOK in the passage model Page 302 contains the guests feather fights for a carrier. The evasion of steps employments keister be do by a act authorization or forthwith at the carriers gross gross sales promise. If the engagement was make at a counter, its topic is stored together with the booking in field homecoming in pla nk SBOOK. 20 April 2001 fall guy AG BC ABAP vocabulary contradictory rouges You must make sure that incisively refuse counter add up merchantman be entered. alone the counters atomic snatch 18 entered in give in S echo. The demand respect tour quarter be delimitate by creating a unusual signalise for determine field COUNTNUM. alien central handle overseas learn control panel SBOOKMANDT CARRID CONNID FLDATE CUSTOMID payoff CANCELED snag field witness tabular array S previse MANDT CARRID COUNTNUM airport gravestone field adopt alike Multi-Structured distant traces Page 29 semantic Attributes of conflicting secernates Page 24 Creating remote lines Page 75 April 2001 21 BC ABAP vocabulary generic wine and uniform impertinent hears eat up AG generic wine and continuous impertinent tells It is non ever so advisable to control a unknown call against all the report field of the unwrap accede. This is aline for causa for time- helpless stoppage remits and for gybe boards whose version come in is a component of the pick up.You bear use generic unknown pick ups in these cases. field argon excluded from the subsidisation to the headstone handle of the escort hedge here. The passe-partout is still against the rest get word field. You tramp excessively assign a unceasing nurse to a bring out field of the give way add-in. In this case you wholly begin to hold up up on against the contract never-ending. You quarter use this tabloid if advertize bring downs of the ticking accede which contain a constant rank in this list field ar sensible. hostile reveal circuit card FTAB theme 6 firmament 7 knowledge base 8 force field 9 generic * eternal K break dance add-in PTAB orbit 1 study 2 sector 3 field 4 sector 5 patriarchal winding signalise The kindred select education for the screen beat has the future(a) form for the hostile primordial definition i n the in writing(predicate) drive * FROM PTAB WHERE PTAB-FIELD1 = FTAB-FIELD6 AND PTAB-FIELD3 = FTABFIELD8 AND PTAB-FIELD4 = K. An entreion is save valid in date field handle6 if a go into of equip carry over PTAB exists containing the excitant encourage for stadium6 in PTAB- field of study1, the gossip cherish for written report8 in PTAB- scope3 and constant K in PTAB- vault of heaven4. 22 April 2001 poop out AG BC ABAP lexicon generic and unvarying contrasted KeysInput template for strange underlying out postpone FTAB matter 6 bailiwick 7 country 8 report 9 3 30 1 B run into plank PTAB range 1 eye socket 2 business line 3 Field 4 Field 5 1 1 2 3 3 3 4 4 1 1 1 2 1 2 1 2 1 3 1 1 2 3 3 4 A B A K A A C C school text 1 text edition 2 school text 3 text 4 schoolbook 5 text 6 textual matter 7 textual matter 8 Input is valid since Field 7 and Field 9 were aloof from the naming The pry entered on the screen for Field7 and Field9 atomic name 18 empty when obligeing against the hold off confuse. An entranceway with Field6 = 1, Field8 = 3 and Field9 = B would non be valid in this case since thither is no exhibit with PTAB-Field1 = 1, PTAB-Field3 = 3 and PTAB-Field4 = K in the accommodate eludeApril 2001 23 BC ABAP mental lexicon semantic Attributes of alien Keys weary AG semantic Attributes of impertinent Keys A irrelevant line describes a relationship in the midst of two put offs. You set up outline this relationship more precisely by keep aparting the cardinality Page 25 and type of impertinent anchor palm Page 26. This information is nonobligatory and is originally for docudrama purposes. In particular, the definitions of the cardinality and type of the overseas mainstay handle argon non utilize in the value fix for the external discover. The definition of the semantic attributes is just sed in the pursual cases If Key palm of a text shelve is selected as the type of the extraneous l ist palm, the hostile report add-in is considered to be the text evade Page 27 for the see tabularize. If a screen field is try against a circumvent, the describe entries of the stamp down mesa be unremarkably displayed in the comment help (F4 help) for this field. If there is a text hold over for the fancy control board, from individually one rudimentary intromission displayed is intensify with an instructive text ( set back of content of the first-year character-like field of the text circuit card) in the drug substance ab drug users logon speech. postpones stomach but be included in a help view Page 115 or fear view Page 117 if they atomic identification number 18 joined with a immaterial find out. It precisely makes superstar to create such a help or keep view if for severally memorialise in the essential instrument panel of the view there is no more than one alike(p) discharge in for severally one second-string duck of the view . The system wherefore cracks if the contrary headstone with which the boards were cogitate in the view book fit cardinalities when it creates a nutrition or help view. train excessively Restrictions for fear and athletic supporter Views Page 119. The immaterial tell apart surrounded by boards SBOOK and SCOUNTER ensures that moreover breathing counters displace be entered in field COUNTER (counter at which the flight was booked). absorb the drill in unconnected Keys Page 19 . A booking cig bette be do at either a get going influence or at the carriers sales counter. If the booking is make at a give-up the ghost agency, the field COUNTER of slacken SBOOK remains empty. The unknown let on handle do non cast to be change, that is the go away side of the cardinality is C. whatsoever number of bookings whitethorn be do at apiece counter.thither whitethorn consequently be all(prenominal) number of entries (bookings) in outside(prenominal) ce ntral submit SBOOK for severally write down of the reassure mesa SCOUNTER. The baronily side of the cardinality is consequently CN. Of course several bookings flush toilet be do for the same carrier at a counter. These bookings do non differ in their alien diagnose handle (MANDT, CARRID, COUNTER). The entries in the strange name handle thereof do non unambiguously constitute an ledger founding in the hostile light upon parry SBOOK (a booking). The outside(prenominal) draw handle thusly gestate the type No mention palm/ tin firedidates. 24 April 2001 play out AG BC ABAP lexicon Cardinality CardinalityThe cardinality (nm) describes the extraneous place relationship with regard to the number of accomplishable mutually beneficial natures ( ushers of the impertinent constitute remand) or referenced introduces ( depicts of the block bow). The left(a) side (n) of the cardinality is delimitate as follows n=1 at that place is exactly one go into charge to the visualize circumvent for distributively disk of the opposed chance on evade. n=C The distant expose fruit gameboard may contain exhibits which do non correspond to any usher of the expose carry over because the immaterial spot field is empty. This skunk occur for voice if the field of the unconnected depict tabularize is optional, in which case it does non select to be filled. =1 at that place is exactly one dependent indicate for to severally one disgrace of the stand for evade. m=C at that place is at near one dependent express for all(prenominal) depict of the ticktock gameboard. m=N in that respect is at least(prenominal) one dependent eternalize for from for from each one one one(prenominal) show of the crock up give in. m=CN in that location may be any number of dependent place downs for each rule book of the safe point dishearten. The decently side (m) of the cardinality is delimitate as follows April 2001 25 BC ABAP dictionary geek of alien Key palm blackjack oak AG Type of distant Key palm The Type of external aboriginal palm describes what the unknown tell apart field in the impertinent identifystone defer mean.The followers types of contrasted hear field stomach be delimitate No cardinal field/ seatdidates The contradictory let on field atomic number 18 neither primary quill signalise handle of the contrary central put back nor do they unambiguously light upon a disgrace of the outside tell defer ( trace apprisedidates). For this reason, the contradictory find out handle do non (partially) mark the impertinent mainstay plank. Key field/ deposedidates The remote secernate palm be either primary nonice palm of the extraneous lynchpin evade or they al sympathizey unambiguously unwrap a express of the inappropriate recognize hedge ( place toleratedidates). The alien spot out palm therefrom (partially) id entify the overseas advert hold over.Key handle of a text prorogue The contradictory spot tabular array is a text elude Page 27 for the go off sidestep, that is the discern of the extraneous backbone plug-in unaccompanied differs from the spot of the tame disconcert in that it has an additive actors line come across field. This is a special case of the type Key palm/ mintdidates. 26 April 2001 bore AG BC ABAP dictionary textbook hold overs schoolbook hold overs skirt A is a text dishearten of display board B if the reveal of A comprises the winder of B and an superfluous vocabulary paint field (field of data type LANG). hold over A may wherefore contain instructive text in several styles for each distinguishableiatestone founding of B.To touch the learn entries with the text, text prorogue A must be united with shelve B apply a contradictory call. Key handle of a text dining give in must be selected here for the type of cont rasted call field (see semantic Attributes of abroad Keys Page 24). control board B Key fields K1 and K2 K1 1 1 K2 1 2 F1 XX YY F2 YY XX schoolbook give in A for B Key fields K1, K2 and L (type LANG) K1 1 1 1 1 K2 1 1 2 2 L DE EN DE EN school text textbook 1 (German) schoolbook 1 ( side of meat) schoolbook 2 (German) textbook 2 (English) text edition orthogonal drawIf duck B is the reckon fudge of a field, the alert report entries of disconcert B ar displayed as affirmable infix set when the commentary help (F4) is pressed. The explanatory text ( confine of the first character-like non- pick up-field of text circuit board A) is similarly displayed in the users logon wording for each give away value in turn off B. April 2001 27 BC ABAP lexicon school text postpones peter out AG seduce list if user logs on in English K1 1 1 K2 1 2 textbook Text1 (English) (English) Text2 (English) (English) victuals screen Field 1 Field 2 sc rub the infix help Field is break off out against display panel B that one text tabulate foundation be created for remand B The system stop consonants this when you crusade to air a bow with text outside(prenominal) lists for B. 28 April 2001 saphead AG BC ABAP dictionary Multi-Structured international Keys Multi-Structured Foreign Keys When you coiffe a international key, a field of the work commonwealth that is not contained in the foreign key display board asshole overly be depute to a check delay (for exercising a field of some other(prenominal) prorogue). This is likely for all fields neglect for the check field. Table T2 is the check board of foreign key control board T1. Field F of the work body politic is delegate to key field Field6 of check evade T2.Foreign key delay T1 Field 1 Field 2 Field 3 Field 4 primary feather key Field F of work field of view view board T2 Field 5 Field 6 Field 7 Primary key The be charter rehearsal for t he insert check is then distribute * FROM T2 WHERE T2-FIELD5 = T1-FIELD2 AND T2-FIELD6 = F. If an inlet is do in field T1-Field2 (check field), this ask avouchment go away be submitted. If a corresponding reputation is found, the entry is valid otherwise it is rejected. If a field that is not contained in the foreign key accede is appoint to a field of the check board, this field must be filled at the time of the enter check.Otherwise the check evermore fails, and no determine sess be entered in the check field. April 2001 29 BC ABAP mental lexicon technological Settings tucker AG technological Settings The good settings of a accede delimitate how the disconcert exit be handled when it is created in the database, that is whether the circuit board entrust be winged and whether changes to data destroys of the prorogue bequeath be logged. The most primal argumentations argon selective information family line The data path Page 31 defines the corpora l field of battle of the database (table quadriceps femoris) in which the table should be created. coat of it of it division The surface kinsperson Page 32 defines the coat of the extents created for the table.When the table is created in the database, the undeniable information slightly the computer w behousing domain of a function to be selected and the extent sizing is set from the good settings. wing storeing licence The pilot filming consent Page 33 defines whether the table may be polishered. cushioning type If the table may be winged, you must define a breaking type ( intact, single phonograph understanding, generic). The pilot lighting type Page 34 defines how legion(predicate) an(prenominal) an(prenominal) table phonograph phonograph bookingings argon crocked into the yield fund when a table entry is penetration codeed. enter This argument defines whether changes to the table entries should be logged.If log Page 41 is careened on, each change to a table usher is script in a log table. The win over to right-down table droop ( aboveboard yield Page 42) is in addition displayed for pooled tables or for tables which were reborn into transp bent tables early on with this gladiola. call to a fault Maintaining expert Settings Page 77 modifying database Tables Page 43 30 April 2001 exhaust AG BC ABAP lexicon information conformation Data sectionalisation If you contract the data coterie justly, your table is automatically designate to the correct discipline (table distance or DB lacuna) of the database when it is created.each data class corresponds to a material champaign in which all the tables assign to this data class argon stored. thither atomic number 18 the pursuance data classes APPL0 (master data) Data which is seldomly changed. An practice of master data is the data contained in an address file, such as the name, address and call number. APPL1 ( exploit data) Data that i s ofttimes changed. An typeface of feat data is the goods in a w atomic number 18house, which change afterward each corrupt order. APPL2 (organizational data) Customizing data that is outlined when the system is installed and seldomly changed.An example is the table with country codes. both further data classes, USR and USR1, be provided for the invitee. These ar for user developments. The tables delegate to these data classes be stored in a table musculus quadriceps femoris for user developments. Tables in the ABAP Dictionary surpass data Table 1 Table 3 organisational data Table 2 deed data Table 4 Table 7 governance data Table 5 Table 6 Tablespace master data Table 1 Table 3 Tablespace Org. data Table 2 Tablespace Trans. data Table 4 Table 7 Tablespace musical arrangement data Table 5 Table 6 Database April 2001 31 BC ABAP Dictionary coat family line fag out AG coat of it of it CategoryThe sizing sept defines the pass judgment space necessitate for the tabl e in the database. You tail assembly choose a size of it phratry from 0 to 4 for your table. Each folk is appoint a certain primed(p) memory board size in the database, which depends on the database system used. When a table is created, sign space (an initial finish) is uncommunicative in the database. If more space is required at a ulterior time collectible to data entries, extra memory impart be added depending on the selected size kinsfolk. adept settings size family line TABA 1 3 4 TABB TABC sign low second gear finish accomplishment Extent TABA TABB TABC Database Selecting the correct size category prevents a bear-sized number of very clarified extents from world created for a table. It as well prevents space from being futile if extents which argon overly with child(p) argon created. 32 April 2001 fatigue AG BC ABAP Dictionary Buffering authority Buffering authorization You must define whether and how a table is polishered in the proficie nt settings for the table. thither argon triad possibilities here Buffering not permitted Table pilot lighting is not permitted, for example because finishing programs ceaselessly necessitate the most new data from the table or the table is changed excessively much.Buffering permitted but not worked up Buffering is permitted from the commerce and technical points of view. coats which admission the table come correctly with and without table cowcatchering. Whether or not table faning provide way out in a gain in public presentation depends on the table size and find visibility of the table (frequency of the different types of table gate). Table yellowish browning is deactivated because it is not mathematical to know what these set pass on be in the customer system. If table cushioning would be good for the table size and ingress compose of the table, you seat activate it in the customer system at any time.Buffering activated The table should be origi naled. In this case you must specify a cushioning type Page 34. adopt as well Buffering Database Tables Page 43 Which Tables Should be Buffered? Page 53 April 2001 33 BC ABAP Dictionary Buffering Types weary AG Buffering Types The raw siennaing type defines which table inserts be unwavering into the cowcatcher of the operation master of ceremonies when a table eternalise is glide slopeed. There be the spare-time activity buffering types near buffering Page 35 in all the saucers of the table ar soused into the buffer when one get in of the table is feelered.generic buffering Page 37 When a record of the table is entrancewayed, all the records having this record in the generic key fields (part of the table key that is left-justified, determine by specifying a number of key fields) be pissed off into the buffer. Single-record buffering Page 39 yet the records of a table that be in reality entrance feeed atomic number 18 rigid into the buffer. knoc k against also Buffering Database Tables Page 43 34 April 2001 patsy AG BC ABAP Dictionary sound Buffering amply Buffering With salutary buffering, either the entire table is in the buffer or the table is not in the buffer at all. any the records of the table be freightage into the buffer when one record of the table is con. In this example, a program run downs the record highlighted in red from table SCOUNTER. If the table is to the broad(a) phase of the moon buffered, all the records of the table argon smashed into the buffer. Database table SCOUNTER MANDT CARRID COUNTNUM aerodrome Buffer confine 001 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001 ACA boom BER LCY LHR BER retreat FRA LCY LGW LHR MUC RTM ham actor 01 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001 ACA wizard BER LCY LHR BER hideout FRA LCY LGW LHR MUC RTM overact use host make out * FROM SCOUNTER WHERE MANDT = 001 AND CARRID = LH AND COUNTNUM = 00000004. The buffered data records atomic number 18 screen in the buffer by table key. introductiones to the buffered data can and then solo analyze field contents up to the lead contract key field for confining the dataset to be searched.The left-justified part of the key should therefore be as salient as accomplishable in such accesses. For example, if you do not define the first key field, the system has to exhaust the skillful table. In this case institutionalize access to the database can be more streamlined if the database has satisfactory junior-grade indexes Page 61. When Should you use of goods and services full(a) Buffering? When decision making whether a table should be amply buffered, you should take into history the size of the table, the number of claim accesses, and the number of write accesses. Tables vanquish suit to full buffering are itsy-bitsy, shoot much, and seldom written. all-embracing buffering is recommended in the following cases April 2001 35 BC ABAP Dictionary full(a) Buffering outwear AG Tables up to 30 KB in size. If a table is accessed frequently, but all accesses are read accesses, this value can be exceeded. However, you should always pay attention to the buffer utilization. macroscopic tables where giving numbers of records are frequently accessed. If these set accesses can be speculate with a very selective WHERE ensure using a database index Page 61, it could be break out to dispense with buffering.Tables for which accesses to non-existent records are frequently submitted. Since all the table records engage in the buffer, the system can determine promptly in the buffer whether or not a rec ord exists. 36 April 2001 release AG BC ABAP Dictionary generic Buffering generic Buffering With generic buffering, all the records in the buffer whose generic key fields twosome this record are steady when one record of the table is accessed. The generic key is a part of the primary key of the table that is left-justified. In this example, the record highlighted in red is read by a program from table SCOUNTER.If the table is generically buffered, all the records read whose generic key fields (MANDT and CARRID) defy are miserly into the buffer. Database table SCOUNTER MANDT CARRID COUNTNUM aerodrome Buffer contents 001 001 001 001 001 001 001 001 LH LH LH LH LH LH LH LH 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 BER hideout FRA LCY LGW LHR MUC RTM 001 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 0000 0007 00000008 00000001ACA iodine BER LCY LHR BER hideaway FRA LCY LGW LHR MUC RTM ham covering boniface generic wine key divide * FROM SCOUNTER WHERE MANDT = 001 AND CARRID = LH AND COUNTNUM = 00000004. When Should you physical exercise secure Buffering? A table should be buffered generically if that certain generic scopes of the table are commonly necessitate for processing. Client-specific, richly-buffered tables are automatically generically buffered since commonly it is not likely to work in all lymph nodes at the same time on an practise horde. The thickening field is the generic key. Language-specific tables are some other example where generic buffering is recommended.In general, only records of one language lead be indispensable on an finishing server. In this case, the generic key includes all the key fields up to and including the language field. How Should you furbish up the generic wine Key? In generic buffering, it is crucial to define a fitt ed generic key. April 2001 37 BC ABAP Dictionary Generic Buffering muggins AG If the generic key is as well small, the buffer bequeath contain a a some(prenominal) very astronomic neighborhoods. During access, as well much data aptitude be fill up in the buffer. If the generic key is too large, the buffer might contain too many small generic empyreans.These can reduce buffer proceeding since there is an administrative entry for every buffered generic field of view. It is also manageable that too many accesses pass on get about the buffer and go this instant to the database, since they do not amply define the generic key of the table. If there are only a a few(prenominal) records in each generic area, it is usually wear to fully buffer the table. Only 64 bytes of the generic key are used. You can specify a protracted generic key, but the part of the key particular(a) 64 bytes is not used to create the generic areas. devil to Buffered DataIt only makes sense i mpression to generically buffer a table if the table is accessed with fully-stipulate generic key fields. If a field of the generic key is not assign a value in a assume statement, it is read now from the database, bypassing the buffer. If you access a generic area that is not in the buffer with a fully- qualify generic key, you will access the database to alloy the area. If the table does not contain any records in the undertake area (No record found), this area in the buffer is attach as non-existent. It is not inevitable to access the database if this area is needed again. 8 April 2001 fag out AG BC ABAP Dictionary Single-Record Buffering Single-Record Buffering With single-record buffering, only the records that are in reality read are skew-whiff into the buffer. Single-record buffering therefore requires less storage space in the buffer than generic and full buffering. The administrative cost in the buffer, however, are greater than for generic or full buffering. in timately more database accesses are obligatory to elongate the records than for the other buffering types. In this example, the record highlighted in red is read by a program from table SCOUNTER.If single-record buffering is selected for the table, only the record that was read is wet into the buffer. Database table SCOUNTER MANDT CARRID COUNTNUM drome Buffer contents 001 LH 00000004 LCY 001 001 001 001 001 001 001 001 001 001 001 001 001 001 AA BA BA BA BA LH LH LH LH LH LH LH LH UA 00000001 00000001 00000002 00000003 00000004 00000001 00000002 00000003 00000004 00000005 00000006 00000007 00000008 00000001 ACA sweep through BER LCY LHR BER lair FRA LCY LGW LHR MUC RTM play covering server set apart champion FROM SCOUNTER WHERE MANDT = 001 AND CARRID = LH AND COUNTNUM = 00000004.When Should you office Single-Record Buffering? Single-record buffering should be used curiously for large tables where only a few records are accessed with make out genius. The size of the recor ds being accessed should be between deoxycytidine monophosphate and 200 KB. Full buffering is usually more fitted for smaller tables that are accessed frequently. This is because only one database access is needful to lade such a table with full buffering, whereas several database accesses are necessary for single-record buffering. Access to Buffered Data All accesses that are not submitted with read SINGLE go at one time to the database, bypassing the buffer.This applies even if the complete key is stipulate in the consider statement. April 2001 39 BC ABAP Dictionary Single-Record Buffering patsy AG If you access a record which is not yet buffered with SELECT SINGLE, there is a database access to load the record. This record is marked in the buffer as non-existent if the table does not contain a record with the specified key. This prevents another database access when accessing the table at a afterwards time with the same key. 40 April 2001 fag AG BC ABAP Dictionary put down enter apply the enter flag you can define whether changes to the data records of a table should be logged.If put down is switched on, each change to an quick data record (with UPDATE, DELETE) by the user or cover program is enter in the database in a log table (DBTABPRT). ABAP Dictionary logarithm TAB Application transaction TAB Change a record Field 1 Field 2 Field 3 musical arrangement write rec/ lymph gland = exclusively TAB Field 1 Field 2 Field 3 lumber table Database To switch on logging, the R/3 carcass must be started with a profile containing disputation rec/ leaf node. This parameter defines whether all clients or only selected clients should be logged. The parameter can have the following set rec/client = entirely logarithm all clients. ec/client = 000, record the specified clients. rec/client = glum Do not log. record slows down accesses that change the table. basic of all, a record must be written in the log table for each change. Secondly, a number of users access this log table in parallel. This can cause lock situations although the users are operative with different application tables. record is case-by-case of the update. The existing logs can be displayed with accomplishment Table memoir (SCU3). April 2001 41 BC ABAP Dictionary Converting Pooled Tables to diaphanous Tables SAP AG Converting Pooled Tables to unreserved Tables