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SAPSAPSSystemsandystemsandAApplicationpplicationPProductsinroductsin

Data

ProcessingData

Processing

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SAPR/3isEnterpriseSoftware

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WhatisSAPR/3?

Aseriesofintegratedcorebusinessapplicationmodulesfortransactionprocessing

Aset

of

functions

that

implement

best

business

practices

Client/Serversoftwarethatprocessesbusiness

transactionsAmethodologyforimplementingapplicationsoftware

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WhatisMySAPERP?

R/3EnterpriseFunctionalityplusAnalytics,SEM,FinancialSupplyChainManagement,MSS/ESS,SAPLearningsolution,ERecruiting,SelfServiceProcurement,

Internet

Sales

R/3

Edition

A

set

of

functionsthatimplementbestbusinesspractices

FullNetWeaver

Suite

A

methodology

for

implementingapplicationsoftware

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5

mySAP Business SuitemySAP Business Suite

CRMCRM

SCMSCM

PLMPLM

SRMSRM

NetWeaver

mySAP ERP

R/3

My SAP ERPMy SAP ERP

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SAPR/3Advantage

All

of

its

applications

are

robust

and

integratedForindividualbusinessapplication,youmayfindsoftwarewithgreaterfunctionalitythanthatincludedinR/3

But,itisnotintegratedwithotherbusinessapplications

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SAPlogonscreen

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SAPR/3System Firstscreenafterlogon

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SAPR/3System

Overview

of

R/3

System

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LogicalViewofR/3System

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LogicalViewofR/3System ThepreviousdiagramshowshowtheR/3Basissystemforms

acentral

platform

within

R/3

System

1. KernelandBasisServices RunningAppl.,User&ProcessAdministration Database

Access

&

Communication

SystemMonitoringandAdministration

2.ABAPWorkbench ThisisthefullfledgeddevelopmentenvironmentforallR/3Application

3.PresentationComponent ResponsibleforInteractionwithUser

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SoftwareOrientedViewofR/3System

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SoftwareOrientedviewofR/3System TheR/3BasissystemismultitierClient/Serversystem.

DatabaseLayer ThislayerconsistsofacentraldatabasesystemcontainsallofthedataintheR/3System

Components

:

DBMS

&

Database

itself ApplicationLayer

ThislayerconsistsofoneormoreapplicationserverandMessageserver

Messageserver

is

responsible

for

communication

between

theapplicationservers

PresentationLayer ThislayerinterfaceswithR/3System&Users

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AdvantagesofMultitierArchitecture DistributionofR/3softwareoverthreelayersmeansthatthesystem

load

is

also

distributed.

This

leads

the

better

system

performance.

Since

the

database

system

contains

all

of

the

data

for

the

entire

R/3system,itissubjecttoaveryheavyloadwhenthesystemisrunning. Itisthereforeagoodideanottorunapplicationprogramsonthesamehost.

ThearchitectureofR/3System,inwhichtheapplicationlayeranddatabaselayerareseparate,allowsyoutoinstallthemonseparatehostsandletthemcommunicateusingthenetwork.

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UserOrientedView

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ApplicationServer

of

R/3

System

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ComponentsofApplicationServer Dispatcher

Thisis

the

link

between

the

work

process

and

the

users

loggedontotheApplicationServer

Gateway ThisistheinterfacebetweentheR/3Communication

protocol(RFC,

CPI/C).

ItcancommunicatewithotherApplicationServerinthesameR/3System,withotherR/3Systems,withotherR/2Systems,orwithothernonSAPSystems

Shared

Memory AlloftheworkprocessesonanApplicationServeruseacommonmainmemoryareacalledsharedmemoryareatosavecontextortobufferconstantdatalocally

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ComponentsofR/3ApplicationServerWorkProcesses

Eachworkprocesseslinkedtoamemoryareacontainingthecontextoftheapplicationbeingrun.

Thecontextcontainsthecurrentdataoftheapplication

program. TypesofWorkProcesses

Dialog

Update

Enqueue Spool

Background

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DatabaseInterfaceServices Establishingandterminatingtheconnectionsbetweenthework

processand

database

Accesstothedatabasetables

AccesstoR/3Repositoryobjects(ABAP,Screen,)

AccesstoCatalogInformation(ABAPDictionary)

ControllingTransactions(Commit/Rollback..)

TableBufferadministrationontheapplicationserver

Twoways

of

accessing

Databases

:

OpenSQL

NativeSQL

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DatabaseAccess:OpenSQL OpenSQLStatementsaresubsetofstandardSQLthatisfullyintegrated

with

ABAP.

They

allow

to

access

the

database

irrespectiveofdatabasesystemR/3SystemInstallationusing.

OpenSQL

Consists

of

DML,DDL,DCL

Open

SQL

goes

beyond

Standard

SQL

to

provide

the

statements

that,inconjunctionwithotherABAPconstructions,cansimplyorspeedupthedatabaseaccess.

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DatabaseAccess:NativeSQL

NativeSQLonlylooselyintegratedintoABAP,andallowstoaccessallofthefunctionscontainedintheprogramming

interface

of

the

respective

database

system.

UnlikeOpenSQLstatements,NativeSQLstatementsarenotchecked

and

converted,

but

instead

are

directly

sent

to

the

databasesystem.

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ABAP/4

Fourthgenerationlanguage

Eventdriven

AllSAPR/3applicationsandpartsofBasisare

developedinABAP

TheABAPprogramminglanguageunifiestheadvantagesofanobjectorientedlanguage

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ABAPDevelopmentWorkbenchObjectives

Understandworkbenchanditstools

Createaprogram

Knowadvanced

features

of

workbench

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ABAPDevelopmentWorkbench

ABAPDevelopmentWorkbenchisagraphical

programmingenvironmentwhichenablesustocreate

new

ABAP

applications

and

change

existing

SAPapplications.

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Workbench

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Workbench

Development

Workbench

is

made

up

of

the

following

tools Versioningsupport Structuringthedevelopmentobjectinpackages InterfaceeditorsforSAPGUIbasedinterfaces DevelopmenttoolsforWebinterfaces Support

for

multi

lingual

text

elements

and

messages

ConnectiontotheTransportOrganizer DirectaccesstoalldatadefinitionsintheABAPDictionary Debugger Toolsforruntimeanalyses

Testtools

Modificationassistanttocompareuserdefinedextensions

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Wor enc

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Wor enc

ThemenupathisTools>ABAPWorkbench

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WorkbenchToolsRepositoryBrowser Usedtodisplayandedithierarchicallistsofdevelopmentobjects.

Dictionary UsedtodefineandsavedatadefinitionsYoucanalsostoredocumentation,help

information,data

relationships,

and

other

information.YoualsousetheDictionarytogeneratedatabaseobjectsliketablesandindexes.

ABAPEditor YouusetheABAPEditortocreateandeditprogramcode.

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WorkbenchToolsFunctionBuilder YouusetheFunctionBuildertodefineandstorefunctionmodules.TheFunctionBuilderstoresthesemodulescentrally.You

can

use

the

library

to

write

new

modules

and

lookupinformationonexistingmodules.

ScreenPainter Usedtodesignthescreensinanapplication'sgraphicaluserinterface.

MenuPainter Usedtodesignthemenusthatappearinyourinterface

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ClickthebuttonABAPEditorintheWorkbench

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...Creating

aProgram

Nameoftheprogramtobecreatedisgiveninthe

programfieldandclickthecreatebutton.

Theattributesscreenappears,fillthefieldsandsave

it.

Thedevelopmentclasshastobeenteredinthe

dialogbox

that

appears

.

Gotothesourcecode.

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Creating a program

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Creatingaprogram

Theprogramattributesscreenlookslikethis

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Creating a program

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Creatingaprogram

TheDevelopmentClassscreenlookslikethis

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