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What is a work process ?
-
A work process is where individual dialog steps are actually processed
and the work is done. Each work process handles one type of request.
Name various work processes of R/3 system ?
1) Dialog or Online ( processes only one request at a time )
2) Background ( started at a specified time )
3) Update ( primary or secondary )
4) Enque( lock mechanism )
5) Spool ( generated online or during back ground processing For printing )
What are the types of Update requests ?
-
An update request can be divided into one primary (V1) and several Secondary
update components (V2). Time-critical operations are placed in V1 component
and those whose timing are less critical are placed in V2 components. If a V1
update fails, V2 components will not be processed.
What are the roll and page areas ?
-
Roll and page areas are SAP R/3 buffers used to store
user contexts ( process requests ) . The SAP dispatcher assigns
process requests to work processes as they are received. If
the work process is unavailable the process requests are queued in the
roll and page areas.
Paging area holds data from the application programs.
Roll area holds data from previous dialog steps and data that characterizes user.
What is a Spool request ?
-
Spool requests are generated during dialog or background processing and
placed in the spool database with information about the printer and print format.
The actual data is placed in the Tem Se (Temporary Sequential objects).
What are the different database integrities ?
-
Semantic integrity
-
Relational integrity
-
Primary key integrity
-
Value set integrity
-
Foreign key integrity and
-
Operational integrity.
DATA DICTIONARY .
Type of a table or structure
The table type determines how the logical table description defined in
the ABAP/4 Dictionary is reproduced on the database.
There are the following table types:
o transparent table
o structure
o append structure
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