SAP DATA DICTIONARY : DATA DICTIONARY INTERVIEW QUESTION AND ANSWERS, Explain how SAP R/2 GUI handles output screen for the user

tags: sap abap intervew questions and answers, Explain how SAP GUI handles output screen for the user., SAP DATA DICTIONARY : DATA DICTIONARY INTERVIEW QUESTION AND ANSWERS

 

SAP DATA DICTIONARY

1. What are the layers of data description in R/3?

1. The External layer.
2. The ABAP/4 layer.
3. The Database layer.

2. Define external layer?

Ans: The external layer is the plane at which the user sees and interacts with the data, that is, the data format in the user interface. This data format is independent of the database system used.
3. Define ABAP/4 layer?

Ans: The ABAP/4 layer describes the data formats used by the ABAP/4 processor.


4. Define Database layer?

Ans: The database layer describes the data formats used in the database.


5. What is a Data Class?

The Data class determines in which table space the table is stored when it is created in the database.

6. What is a Size Category?

Ans: The Size category describes the probable space requirement of the table in the database.
7. How many types of size categories and data classes are there?

Ans: There are five size categories (0-4) and 11 data classes only three of which are appropriate for application tables:

1. APPL0- Master data (data frequently accessed but rarely updated).
2. APPL1- Transaction data (data that is changed frequently).
3. APPL2- Organizational data (customizing data that is entered when system is configured and then rarely changed).

The other two types are:

1. USR
2. USR1 – Intended for customer's own developments.

8. What are control tables?

Ans: The values specified for the size category and data class are mapped to database-specific values via control tables.

9. What is the function of the transport system and workbench organizer?

Ans: The function of the transport system and the Workbench Organizer is to manage any changes made to objects of the ABAP/4 Development Workbench and to transport these changes between different SAP systems.

10. What is a table pool?

Ans: A table pool (or pool) is used to combine several logical tables in the ABAP/4 Dictionary. The definition of a pool consists of at least two key fields and a long argument field (VARDATA).

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