ABAP Interview Questions and answers set 1.

SAP ABAP Interview Questions and answers

1.   What is an ABAP data dictionary?

ABAP 4 data dictionary describes the logical structures of the objects used in application development and shows how they are mapped to the underlying relational database in tables/views.

2.  What are domains and data element in SAP ABAP?

Domains: 

Domain is the central object for describing the technical characteristics of an attribute of an business objects. It describes the value range of the field.

Data Element: 

It is used to describe the semantic definition of the table fields like description the field. Data element describes how a field can be displayed to end-user.

3.  What is foreign key relationship in SAP ABAP?

A relationship which can be defined between tables and must be explicitly defined at field level. Foreign keys are used to ensure the consistency of data. Data entered should be checked against existing data to ensure that there are now contradiction. While defining foreign key relationship cardinality has to be specified. Cardinality mentions how many dependent records or how referenced records are possible.

4.  Describe data classes in ABAP.

Master data:

It is the data which is seldom changed.

Transaction data:

It is the data which is often changed.

Organization data:

It is a customizing data which is entered in the system when the system is configured and is then rarely changed.

System data:

It is the data which SAP R/3 system needs for itself.

 

5.   What are indexes?

Indexes are described as a copy of a database table reduced to specific fields. This data exists in sorted form. This sorting form ease fast access to the field of the tables. In order that other fields are also read, a pointer to the associated record of the actual table are included in the index. The indexes are activated along with the table and are created automatically with it in the database.