Overview of ERP, SAP , ABAP

1) ERP Enterprise Resource Planning Its purpose is to manage any company functions. 

 2) SAP SAP - System Application and Products for real-time data processing. or SAP - System Application and Products in real-time data processing. 

 3) History of SAP SAP was introduced by SAP AG in 1972 at Walldorf.( Germany) SAP is a German-based product. 

 4) Features of SAP a)It is an integration of all functions into one common software. b)It is a Multi-lingual software. C)It is a user-based license agreement.( requires a username and password) 

 5) SAP R/3 Architecture ( 3 - 3 tier architecture, R- Real) - SAP is a real-time architecture. Layers - Presentation Layer( User Interaction Layer) Application Layer( Writing the programs and applications) Database Layer( To store and retrieve the data). 

 6) SAP Netweaver (NW) is an integrated technology platform that can support various SAP applications. Examples -> SAP ERP(Enterprise Resource Planning) SAP CRM( Customer Relationship Management) SAP SRM( Supply Relationship Management) SAP PI( Process Integration). 

 7) ABAP/4 -> Advanced Business Application Programming language. It is a 4th generation language. ABAP lies on the Application Layer. 

 8) Modules of SAP-> Functional Modules Technical Modules Functional Modules 

-> SAP SD( Sales & Distribution) 

 SAP MM( Material Management) 

 SAP PS( Project System) 

 SAP FICO( Finance & Controlling) 

 SAP HR( Human Resources) -> HCM( Human Capital Management)

 SAP WM( Warehouse Management) 

 Techical Modules-> 

 SAP BASIS -> Administration and Monitoring of SAP systems. 

 SAP ABAP -> Programming language for SAP. 

 SAP BIBO( Business Intelligence, 

9) Business Objects) -> Reporting tool 

 10) SAP system Landscape Development - Dedicated for development. Quality -> Testing Production( Live system) - Used by the customer. Development->Quality->Production Transport Request -> It is a Mechanism to transport objects from one system to another system. 

 11) SAP Logon Configuration: Description: You can put any description of the system. If we will not put any description, It is a combination of System Id and Application Server. Application Server: Enter IP address or Hostname of SAP application server. Instance number: The instance number of the SAP system which is defined during SAP installation. It is of 2 characters long.It varies from 00 to 99. System ID(SID): System id is a unique identification code for every SAP system which is defined during SAP Installation. It is 3 characters long. Example: S4H,A4H etc. 

 12) ABAP Workbench -> It is a collection of ABAP tools. SE38 -> Program/Report SE11-> ABAP Dictionary SE37 -> Function Module SE24-> Class 

 13) Transaction Code -> It is a shortcut to access ABAP workbench tools. Examples: /nxxxx - to call Transaction xxxx( override the existing session) /oxxxx - to Call Transaction xxxx in a new Session /NEX -> to close all the sessions /n -> to cancel a session /o- Display an Overview of sessions 

 14) User can open a maximum of 6 sessions. 

 15) F4 Help -> It tells us what are the various possible values for any Input field. F1 Help -> It gives us the technical information of any field/column.