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Top 50 SAP ABAP Interview Questions & Answers

Top 50 SAP ABAP Interview Questions & Answers

Have you certified SAP ABAP training modules? Are you going to attend an interview to start your career as an SAP ABAP Consultant? Then here is the top 50 SAP ABAP Interview Questions & Answers that you may encounter during the interview. Continue reading to crack an SAP ABAP Job Interview.

Question 1: Explain SAP ABAP:

In SAP, ABAP stands for Advanced Business Application programming. This is one of the many application-specific languages for the 4th generation and it is developed in the 1980s. This is created by the German Software Company named SAP SE. As of now, it is positioned together with JAVA as a language for the SAP NetWeaver Application Server which is part of building business applications and other SAP Modules.

Question 2: Define ABAP Data Directory

ABAP 4 Data Dictionary is used to describe the logical structures of the objects that are used in the application development. This is also used to define the underlying relational database in tables.

Question 3: What is the Difference between Pool Table and Transparent Table?

Pool Tables: These tables are stored at the database level which has many relations with the table in the database.

Transparent Tables: The structure of the table corresponds to a single database field and this has a one-to-one relation with the table in the database.

Question 4: Define BDC (Batch Data Communications) Programming?

This programming is the automatic procedure to transfer large or external data into the SAP System. This “Queue Field” is the central component of the transfer which receives the incoming data through batch input programs and groups that are corresponded into sessions.

Question 5: What is the Classification of Data Classes?

Usually, the Data Classes are classified into the following:

Master Data: In this class, the data stored will be rarely changed.

Transaction Data: In this, the data stored can be changed very often.

Organizational Data: This is customized data and this is stored in the system when the system is initially configured. So, it will be very rarely changed.

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Question 6: What are the Internal Tables?

These tables exist only when the programs are running. This table is used to perform table calculation on the subset of database tables and also, it helps for re-organization the content of database tables, as per the users required.

Question 7: What are the Functional Modules used in BDC Sequence?

When it comes to functional modules used in BDC, there are 3 different modules that are used in sequence to perform data transfer successfully using BDC programming languages and they are:

a) BDC_OPEN_GROUP

b) BDC_INSERT

c) BDC_CLOSE_GROUP

Question 8: Define Foreign Relationship

Foreign keys are being used to ensure the consistency of data. The relationship between the tables should be established and it should be explicitly defined at the field level. While entering the data, it should be crossed checked carefully against the existing data to ensure that there is no contradiction. While defining the foreign key relationship, cardinality has to be specified.

Question 9: In SAP ABAP, List out the Difference between Table and Structure in Data Dictionary?

The main difference between Structure and table is as follows:

A) In structure, we can’t able to store the data physically, but in the table, data can be stored physically

B) Tables have a primary key, but structures don’t have

C) Structures doesn’t have a technical attribute, but the tables have

Question 10: Define Smart Forms

Smart Forms help you to create forms using a graphic design tool.

Question 11: Define the Components of SAP Scripts

In SAP, SAP Scripts are defined as a word processing tool. This has its own function like standard text and layout sets. Further, this layout set consists of – Windows and Pages, character formats, paragraph formats, and more.

Question 12: What are the Difference between the Template and Table?

The main difference between the table and template – Template is Static and the table is dynamic.

Question 13: Define ALV Programming? When Grid is used in ABAP?

ALV is called an Application List Viewer. SAP provides a set of ALV Function modules that can be used to enhance the accuracy of the report. Further, it also improves the functionality and readability of any report output. Further, this acts as an important tool for arranging the columns in the report output.

Question 14: Explain the Scenario to use End of the Selection Event?

The event End of the Selection is mostly used while writing the code for HR ABAP. In this ABPA Code, data is retrieved at the start of the selection even and all the printing on the list will be done at the end of the selection event.

Question 15: Can You Explain the Main Difference Between ABAP and OOABAP? When to use OOABAP?

Traditional programs in R/3 are developed using ABAP and the BSP /PCUI applications along with anything that is involved with Object-Oriented like BAD’s and Smart Forms etc. are designed and developed using OOABAP

Question 16: Define Table Buffer? Which Type of Tables is used in Buffer?

In SAP ABAP Modules, Buffer means memory space and table buffer means the space where the table information is available on the application server. When you call for data from a database table, this will get the data from the application server. Transparent tables and pool tables are buffered, whereas cluster tables cannot be buffered.

Question 17: Explain the Use of “Pretty Printer”

Pretty Printer is used to format the ABAP Code

Question 18: Can You Explain the Difference Between Type and Like?

Type: While declaring the data, you can assign data type directly to the data object.

Like: While declaring the data object, you can assign the data type of another object.

The main difference between the Type and Like is – Type refers to the existing data type, on the other hand, Like refers to the existing data object.

Question 19: Explain the Different Types of ABAP/4 Editors and their differences?

In SAP ABAP, there are basically 2 types of editors, i.e. SE38 and SE80.

Using SE38, you can create programs and view online reports, and also basically you can do all the developments of objects in this editor. In SE80, you can get access to additional features such as creating packages, function group, module pool, classes, programs, and BSP Applications.

Question 20: What is the Difference Between Dialog Program and a Report?

A report is an executable program whereas a dialog is a module pool program. Further, it has to be executed via transaction only. Dialog is used for the customization of screens.

Question 21: Explain Lock Object

To combine & synchronize the access of several users using the same data lock objects are being used.

Question 22: Explain the Process on How Data is Stored in Cluster Table?

In Cluster Table, data are stored as the name Value Pair; moreover, it contains data from multiple DDIC tables.

Question 23: How to Debug a Script Form?

Follow the below process to debug the script form:-

SE71–>give the form name->utilities->activate debugger

Question 24: Explain the different types of Data Dictionary Objects?

The types of Data Dictionary Objects are as follows:-

a) Tables

b) Views

c) Domain

d) Data Element

e) Type Groups

f) Search Helps/Matchcode Objects

g) Lock Objects

h) Structures

i) Table Types

Question 25: Explain the Different Ways to do the Tuning?

Tuning can be done in the three-way, i.e. disk i/o, SQL tuning, and memory tuning. Before tuning, you need to get the status of your database using an oracle feature called Stat pack and Tkprof.

Question 26: Define “Group By” in the Select Statement?

The Group By clause is used as a specific field to fetch the data from the table

Question 27: Define Dispatcher?

A control agent that manages the resources for the R/3 Applications is called an SAP dispatcher.

Question 28: Define the Two Methods used Updating SAP Standard Tables?

There are two methods available for modifying and updating SAP Standard tables and they are:

a) Append Structures

b) Customizing Structures

Question 29: Explain the Difference Between a Database Index and a Match Code?

In Database Index, it consists of fields from one table, while match code consists of fields from several tables. Match code objects can be built on cluster tables, pool tables, and transparent tables.

Question 30: What are the Benefits of the Modularization Technique?

With the use of this modularization technique, you can avoid redundancy in programs, if the program comprises of the same or similar blocks of statement. Or in case, it is required to process the same function multiple times. By the APAP Modularization technique, ABAP/4 programs can make it easy to read and improve their structure. These programs are easier to track and maintain the database.

Question 31: How to Create Callable modules of program code within 1 ABAP/4 Program?

a) By defining Macros

b) By creating include programs in the library.

Question 32: Define the Different Types of Integrities

a) Semantic Integrity

b) Relational Integrity

c) Primary Key Integrity

d) Value Set Integrity

e) Foreign Key Integrity

f) Operational Integrity

Question 33: Why do we use the TYPES statement in ABAP programming?

The main functionality of the TYPES is used to pass user-defined structure in an ABAP Program.

Question 34: Explain Subroutine

This subroutine is the reusable section of code. This also works as a modularization unit within the program where the function is encapsulated in the form of programming language or source code. Join Training Expand how to get a better overview of the main program and to learn the corresponding sequence of statements many times.

Question 35: What is Change and Transport management system in SAP?

Abbreviated as Change and Transport System (CTS), it is a tool that helps you to organize development projects in ABAP workbench and in customizing and then transport the changes between SAP Modules and the clients involved in the system landscape.

Question 36: What is the use of data type C?

Data type C variables are used for holding alphanumeric characters, with a minimum of 1 character and a maximum of 65,535 characters. By default, these are aligned to the left.

Question 37: What is the use of CONDENSE statement in ABAP programming?

CONDENSE statement is used to remove blank characters.

Question 38: What is the use of the breakpoints table in ABAP programming?

This breakpoint table can be very useful when one is in a large program with many breakpoints set. It allows one to review the breakpoint and allows for the removal of breakpoints that are no longer desired.

Question 39: What is ABAP Web Dynpro? Why it is used?

Web Dynpro is standard SAP UI technology that allows you to develop web applications using graphical tools and a development environment integrated with the ABAP workbench. Using graphical tools reduces the implementation effort and you can better reuse and maintain components in the ABAP workbench.

Question 40: What are the benefits of using Web Dynpro?

a) You can easily maintain and reuse components for development.

b) Less implementation time as the use of graphical tools

c) You can easily change layout and navigation using graphical tools.

d) Easy structure changes.

e) With the use of data binding, you can use automatic data transport.

f) Ease of integration in ABAP environment.

Question 41: What is a view in the Web Dynpro component?

Each Web Dynpro application contains at least one view and it is used to define the layout of a user interface. Each view consists of multiple user elements and a controller and context.

The controller is used to process user requests and processing of data and context contains data to which elements of view are bound.

Question 42: Can we store a version of abject without releasing it?

Yes!

Question 43: What is the use of messages in Web Dynpro?

In ABAP Workbench, you can also create and show messages that contain information for end-users of the Dynpro application. These messages are displayed on the screen. These are user interactive messages that display important information about the Web Dynpro application.

Question 44: What is match code? How it is different from the database index?

Match code objects can be built on cluster tables, transparent tables, and pooled tables however a Database Index contains fields only from one table.

Question 45: What is the Command which is used for Interactive Reports?

Top-of-Page during line-selection

Question 46: What is the Transaction Code for Table Maintenance?

SM30

Question 47: Explain The Difference Between Primary Key And Unique Key?

Primary Key: It cannot be NULL & it can accept the value as O

Unique Key: It can be NULL

Question 48: What is the Abbreviation of RFC?

Remote Function Call

Question 49: How You Will Code the Hide Statement

In a LOOP Statement

Question 50: How To Write A Bdc – How Do You Go About It?

Steps for writing BDC

1) /nSE38

2) Declare Tables, Data (for ITAB), and Data (for BDCITAB)

3) Call function ‘Upload’.

4) Write code for the First Screen, Radio Button, Filename, Change Button, Second Screen, Utilities (Create Entries), Third Screen, and Save.

5) Call transaction ‘SE11’ using BDCITAB mode ‘A’.

6) Save, Check Errors, Activate and Execute.

Hope now you are all done to attend the interview for SAP ABAP Consultants! Do proper homework by working on these questions & start your career as a certified SAP Professional today! In case, if you wish to learn the advanced concepts of the SAP ABAP Module, then you can join us at any time! Training Expand, the SAP Training Institute in Hyderabad is here to provide the best online SAP Training courses which help you to learn SAP ABAP in a few training sessions within the comfort of your home!

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