Common Interview Questions
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Q. What is SAP R/3?
Ans SAP R/3 refers to Systems Application and Product for data processing Real-time having a 3 tier architecture i.e. Presentation layer, Application layer and Database layer.
Q. What are the contents in technical specifications?
Ans There are five contents in Technical Settings: Data Class, Size Category, Buffering Permission, Buffering Type and Logging.
Q. What is an instance?
Ans When you call a function module, an instance of its function group plus its data, is loaded into the memory area of the internal session. An ABAP program can load several instances by calling function modules from different function groups.
Q. What is Function group? Difference between function group and function module?
Ans Function Groups act as containers for Function Modules that logically belong together.
1) These cannot be defined in a Function Module.
2) It cannot be called.
3) They are containers for Function Module.
1) These must be defined in a Function Group.
2) It can be called from any program.
3) They are not containers for Function Group.
Q. What is the difference between 'Select single * ' and 'Select upto 1 rows'?
Ans ‘Select single *’ – The result of the selection should be a single entry. If it is not possible to identify a unique entry, the system uses the first line of the selection. For e.g.
DATA : ITAB TYPE ZREKHA_EMP.
SELECT SINGLE * FROM ZREKHA_EMP INTO ITAB
WHERE EMPNO = ‘00101’ AND DEPTNO = ‘0010’.
WRITE : / ITAB-EMPNO, ITAB-EMPNAME,ITAB-DEPTNO.
Select upto 1 rows -
Q. What Function does data dictionary perform?
Ans. Central information repository for application and system data. The ABAP Dictionary contains data definitions (metadata) that allow you to describe all of the data structures in the system (like tables, views, and data types) in one place. This eliminates redundancy.
Q. Difference between domain and data element? What are aggregate object?
Ans Domain - Specifies the technical attributes of a data element - its data type, length, possible values, and appearance on the screen.Each data element has an underlying domain. A single domain can be the basis for several data elements. Domains are objects in the ABAP Dictionary.
Data Element - Describes the business function of a table field. Its technical attributes are based on a domain, and its business function is described by its field labels and documentation.
Aggregate Object – Views, Match Code and Lock objects are called aggregate objects because they are formed from several related table.
Q. What is view? Different types of view. Explain?
Ans View - A view is a virtual table containing fields from one or more tables. A virtual table that does not contain any data, but instead provides an application-oriented view of one or more ABAP Dictionary tables.
Different Types of View:
2) Database – It is on more than two tables.
3) Projection – It is only on one table.