SAP Interview Questions

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1. What Is An Abap Instance?

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.

2. What Is Sap R/3?

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.

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3. What Are The Contents In Technical Specifications?

There are five contents in Technical Settings:

Data Class

Size Category

Buffering Permission

Buffering Type and

Logging.

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4. What Is Function Group? Difference between Function Group and Function Module?

Function Groups act as containers for Function Modules that logically belong together.

Function Groups

1) These cannot be defined in a Function Module.

2) It cannot be called.

3) They are containers for Function Module.

Function Modules

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.

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5. What Function Does Data Dictionary Perform?

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.

6. Difference between Domain and Data Element? What Are Aggregate Object?

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.

7. What Is View? Different Types of View. Explain?

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:

 Maintenance

Database – It is on more than two tables.

Projection – It is only on one table.

Help

8. Can You Print Decimals In Type N? What Is Difference Between Float And Packed Data Type?

No, we cannot print decimals in type N because decimal places are not permitted with N data type.

Float Data Type: It cannot be declared in Parameters.

Packed Number: It can be declared in Parameters.

For e.g.

PARAMETERS: A (4) TYPE P DECIMALS 2, B (4) TYPE P DECIMALS 2.

DATA: C (4) TYPE P DECIMALS 2.

C = A + B.

WRITE: / ‘THE SUM IS’, C.

9. What Are The Different Functions Used In Sap Script? What Are The Parameters Used In Each Function?

There are three different functions used in SAP Script:

OPEN_FORM

WRITE_FORM

CLOSE_FORM

Parameters in Each Function:

OPEN_FORM

Exporting

Form

Language

WRITE_FORM

Exporting

Element

Window

CLOSE_FORM

10. What Is Sequence Of Event Triggered In Report?

There are 6 events in report:

 Initialization

 At Selection-Screen

 Start-of-Selection

 Get

 Get Late

 End-of-Selection

 Top-of-Page

 End-of-Page

 At Line Selection

 At User Command

 At PF (nn)

11. What Are Standard Layouts Sets In The Sap Script?

There are four standard layouts in the SAP Script:

Header

Logo

Main Window

Footer

12. What Are The Various Types Of Selection Screen Event?

SELECTION-SCREEN BEGIN OF BLOCK ABC WITH FRAME TITLE T01.

SELECTION-SCREEN BEGIN OF SCREEN 500 AS WINDOW.

CALL SELECTION-SCREEN 500 STARTING AT 10.

13. What Are The System Fields? Explain?

The ABAP system fields are active in all ABAP programs. They are filled by the runtime environment, and you can query their values in a program to find out particular states of the system. Although they are variables, you should not assign your own values to them, since this may overwrite information that is important for the normal running of the program. However, there are some isolated cases in which you may need to overwrite a system variable. For example, by assigning a new value to the field SY-LSIND, you can control navigation within details lists.

14. Difference between Sap Script and Report?

SAP Script – It is the integrated text management system of the SAP R/3 System.

Two types:

PC Editor

Line Editor.

Reports - It is the way to display data fetched from database table onto screen or directly output it to a printer.

Two types:

Classical

 Interactive.

15. Difference Between Sy-tabix And Sy-index? Where It Is Used? Can You Check Sy-subrc After Perform?

SY-TABIX - Current line of an internal table. SY-TABIX is set by the statements below, but only for index tables. The field is either not set or is set to 0 for hashed tables.

* APPEND sets SY-TABIX to the index of the last line of the table, that is, it contains the overall number of entries in the table.

* COLLECT sets SY-TABIX to the index of the existing or inserted line in the table. If the table has the type HASHED TABLE, SY-TABIX is set to 0.

* LOOP AT sets SY-TABIX to the index of the current line at the beginning of each loop loss. At the end of the loop, SY-TABIX is reset to the value that it had before entering the loop. It is set to 0 if the table has the type HASHED TABLE.

* READ TABLE sets SY-TABIX to the index of the table line read. If you use a binary search, and the system does not find a line, SY-TABIX contains the total number of lines, or one more than the total number of lines. SY-INDEX is undefined if a linear search fails to return an entry.

* SEARCH FOR sets SY-TABIX to the index of the table line in which the search string is found.

SY_INDEX - In a DO or WHILE loop, SY-INDEX contains the number of loop passes including the current pass.

16. Explain What Is A Logical Database?

Logical Databases are special ABAP programs that retrieve data and make it available to application programs.

Use of LDB – is used to read data from database tables by linking them to executable ABAP programs

17. Explain What Are The Events Used For Logical Database?

There are Two Events:

GET - This is the most important event for executable programs that use a logical database. It occurs when the logical database has read a line from the node and made it available to the program in the work area declared using the statement NODES table Tag. The depth to which the logical database read is determined by the GET statements

PUT - The PUT statement directs the program flow according to the structure of the logical database.

18. What Is The Difference Between Get And Get Late?

GET - After the logical database has read an entry from the node table Tag.

GET LATE - After all the nodes of the logical database have been processed that are below <table> in the database hierarchy.

19. What Are The Data Types Of Internal Tables?

There are three types:

 Line

 Key

 Table

20. What Are The Events Used In Abap In The Order Of Execution?

The Events used in ABAP are:

1. INITIALIZATION

2. AT SELECTION-SCREEN

3. AT SELECTION-SCREEN ON <field>

4. START-OF-SELECTION

5. TOP-OF-PAGE

6. TOP-OF-PAGE DURING LINE SELECTION

7. END-OF-PAGE

8. END-OF-SELECTION

9. AT USER-COMMAND

10. AT LINE-SELECTION

11. AT PF<NN>

12. GET

13. GET LATE.

14. AT User Command

21. Explain What Are Interactive Reports?

An output list which displays just the basic details & allow user to interact, so that a new list is populated based on user-selection. With interactive list, the user can actively control data retrieval and display during the session.

22. What Are The Commands Used For Interactive Reports?

Top-of-Page during line-selection.

23. What Are The System Fields You Have Worked With? Explain?

I had worked with the following (30) system fields:

1) SY-DBSYS - Central Database

2) SY-HOST - Server

3) SY-OPSYS - Operating System

4) SY-SAPRL - SAP Release

5) SY-SYSID - System Name

6) SY-LANGU - User Logon Language

7) SY-MANDT - Client

8) SY-UNAME - Logon User Name

9) SY-DATLO - Local Date

10) SY-DATUM - Server Date

11) SY-TIMLO - Local Time

12) SY-UZEIT - Server Time

13) SY-DYNNR - Screen Number

14) SY-REPID - Current ABAP program

15) SY-TCODE - Transaction Code

16) SY-ULINE - Horizontal Line

17) SY-VLINE - Vertical Line

18) SY-INDEX - Number of current loop Pass

19) SY-TABIX - Current line of internal table

20) SY-DBCNT - Number of table entries processed

21) SY-SUBRC - Return Code

22) SY-UCOMM - Function Code

23) SY-LINCT - Page Length of list

24) SY-LINNO - Current Line

25) SY-PAGNO - Current Page Number

26) SY-LSIND - Index of List

27) SY-MSGID - Message Class

28) SY-MSGNO - Message Number

29) SY-MSGTY - Message Type

30) SY-SPONO - Spool number during printing

24. What Is The Transaction Code For Table Maintenance?

SM30.

25. Explain What Is The Difference Between Primary Key And Unique Key?

Primary Key – It can accept 0 values and cannot be NULL.

Unique Key – It can be NULL.

26. If You Are Using Logical Databases How Will You Modify the Selection-screen Elements?

Select-options: dame for deptt-dname.

27. What Is An Rfc?

Remote Function Call.

28. Explain What Are The Events In Screen Programming?

PBO (Process before Output) – Before the screen is displayed, the PBO event is processed.

PAI (Process after Input) – When the user interacts with the screen, the PAI event is processed.

POH (Process On Help) - are triggered when the user requests field help (F1). You can program the appropriate coding in the corresponding event blocks. At the end of processing, the system carries on processing the current screen.

POV (Process On Value) - are triggered when the user requests possible values help (F4). You can program the appropriate coding in the corresponding event blocks. At the end of processing, the system carries on processing the current screen.

29. What Is The Significance Of Hide?

It stores the click value and display the related record in the secondary list.

30. Where Do You Code The Hide Statement?

In a LOOP statement.

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praneetha
praneetha
servicenow developer
Praneetha is a Post Graduate in Computer Science from Andhra University .She is currently working as an IT developer at hkr trainings.com. And she has great experience includes both IT development and operational roles. Connect with her also on LinkedIn and Twitter. Thank you

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