SAP ABAP Top 10 Interview Questions And Answers

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1. Define ABAP?

Ans: ABAP stands for Advanced Business Application Programming is a high level programming language created by the German software company SAP. It is presently positioned as the language for programming SAP's Web Application Server, part of its NetWeaver platform for building business applications. 

2. Name some events in ABAP language?

Ans: The events are as follows:

1. Initialization
2. At selection-screen
3. Start-of-selection
4. End-of-selection
5. Top-of-page
6. End-of-page
7. At line-selection
8. At user-command
9. At PF
10. Get
11. At New
12. At LAST
13. AT END
14. AT FIRST 

3. What is service (within R/3)?

Ans: A service is a process or group of processes that execute a specific system function and frequently provide an application-programming interface for other processes to call.

4. Name some different layers in R/3 system?

Ans: The different layers in R/3 system are:

1. Presentation Layer
2. Application Layer
3. Database Layer

5. Define BDC programming?

Ans: BDC stands for Batch Data Communications. Batch input is a automatic procedure referred to as Batch Data Communications. The central component of the transfer is a row file which receives the data via batch input programs and groups connected data into "sessions".

6. Name few functions of dispatcher?

Ans: Few functions of dispatcher:

1. Equal allocation of transaction load to the work processes.
2. Management of buffer areas in main memory.
3. Group of communication activities.
4. Integration of the presentation levels.

7. Define Spool request?

Ans: Spool requests are created during dialog or background processing and placed in the spool database with information about the printer and print format. 

8. Explain about ABAP/4 Query?

Ans: ABAP/4 Query is a powerful tool to create simple reports without any coding.

It can be generated through the following 3 simple reports:

1. Basic List: It is the simple reports.
2. Statistics: Reports with statistical functions like Average, Percentages.
3. Ranked Lists: For analytical reports.

For creating an ABAP/4 Query, programmer has to create user group and a functional group. Functional group can be created using with or without logical database table. 

9. Define data dictionary?

Ans: Data Dictionary is a central source of data in a data management system. Its main function is to support the creation and management of data definitions.

10. Mention few basic objects of the data dictionary?

Ans: Few basic objects of data dictionary:

1. Tables         
2. Domains
3. Data elements
4. Structures
5. Foreign Keys