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Customer Relationship Management Class Notes_58988054-SapAbap-Class-Notes

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SAP-ABAP
ENTERPRISE RESOURCE PLANNING (ERP):
ERP is a package which provides solution for departmental functionalities of
an organization.
SAP ADVANTAGES:
SAP can support any database at the back end.
Platform independent.
Supports multiple languages.
Faster b/w networks.
Can support any database in the backend.
Transaction failure is very less comparing 2 other erp packages
(0.03%).
SAP life cycle implementation.
Package evaluation.
Project planning and designing.
Proto type.
Gap analysis.
Business process re-engineering.
s/w installation and testing.
End user training.
Application transportation.
Go live.
Support and maintenance.
SAP landscape:
Development server (functional).
Quality server( testing).
Production server (end-user uses the system).
Role of ABAPer:
Screen creation.
Table creation.
Data migration.
Reporting.
Redirecting SAP data from d-base to o/p devices.(scripts & forms).
R/3 – real time data processing.
ABAP/4 – advanced business application programming. If a language
provides a d-base by default is called 4
th
generation language.
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R/3 ARCHITECTURE COMPONENTS:
1. DISPATCHER - This component acts as an interface between the PL and
AS. It receives user's request from PL and allocates a work area for each
request from the user.
2. WORK PROCESS - This component allocates memory area for each
request received from dispatcher on a roll-in and roll-out basis. Once a
request is processed, the memory area is rolled out to allocate for next
request from dispatcher.
3. DATABASE CONNECTIVITY
- OPEN SQL - It receives each user's request in open SQL format
(INSERT, UPDATE, DELETE, MODIFY) and converts them in native SQL
format (Database used at the back end).
- NATIVE SQL - It checks for syntax errors in requests received
and passes the request to database through gateway service.
4. MESSAGE SERVICE - If there are any syntax errors in requests received,
the Native SQL component uses message service to raise error messages for
the end user from the message pool. Message pool is a container of user-
defined and pre-defined messages.
5. GATEWAY SERVICE - If there is a distributed database at the back end,
user's queries are redirected to appropriate database using gateway service.
This component acts as an interface between AS and DL.
WHAT IS CLIENT IN SAP?
CLIENT is the topmost hierarchy in SAP database.
Each functional module in SAP is assigned a client.
The objects developed by ABAPer for each module is stored in a
package and request number and finally saved under a client number
assigned for the particular module.
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1 SAP-ABAP ENTERPRISE RESOURCE PLANNING (ERP): ERP is a package which provides solution for departmental functionalities of an organization. SAP       ADVANTAGES: SAP can support any database at the back end. Platform independent. Supports multiple languages. Faster b/w networks. Can support any database in the backend. Transaction failure is very less comparing 2 other erp packages (0.03%). SAP           life cycle implementation. Package evaluation. Project planning and designing. Proto type. Gap analysis. Business process re-engineering. s/w installation and testing. End user training. Application transportation. Go live. Support and maintenance. SAP    landscape: Development server (functional). Quality server( testing). Production server (end-user uses the system). Role      of ABAPer: Screen creation. Table creation. Data migration. Reporting. Redirecting SAP data from d-base to o/p devices.(scripts & forms). R/3 – real time data processing. ABAP/4 – advanced business application programming. If a language provides a d-base by default is called 4th generation language. 2 R/3 ARCHITECTURE COMPONENTS: 1. DISPATCHER - This component acts as an interface between the PL and AS. It receives user's request from PL and allocates a work area for each request from the user. 2. WORK PROCESS - This component allocates memory area for each request received from dispatcher on a roll-in and roll-out ...
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