Sap Abap Interview Questions For Freshers
SAP ABAP Interview Questions for Entry-Level Candidates
SAP ABAP is a technical programming language used for developing applications and customization in the SAP environment. It is the backbone of the SAP system and plays a crucial role in the smooth functioning of a company's business processes. As a fresher, you may be asked various questions in an interview to assess your understanding of ABAP concepts, programming skills, and problem-solving abilities. These questions can range from basic to advanced topics and may cover areas such as data types, control structures, objects, debugging, and performance optimization. Therefore, it is essential to have a strong foundation in ABAP and practice answering interview questions to impress potential employers.
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1 - What is ABAP and why it is used?
ABAP (Advanced Business Application Programming) is a high-level programming language used for developing business applications in the SAP environment. It is a part of SAP NetWeaver platform and is used to create and modify programs that run on SAP's Application Server. ABAP is used primarily in the creation of reports, extensions, and enhancements for SAP's core business applications.
2) What are the different data types in ABAP?
Some of the data types in ABAP include Integer, Decimal, Character, Date, Time, and Structure. These data types can be used to store and manipulate different types of data in an ABAP program.
3) What are internal tables in ABAP?
Internal tables in ABAP are data structures used to store and manipulate data within an ABAP program. They can have one or more columns and multiple rows of data. Internal tables are mainly used to process and display data retrieved from a database table.
4) What is the function module in ABAP?
A function module in ABAP is a set of reusable code that performs a specific task. These can be called from any ABAP program and are used to modularize and reduce code redundancy. Function modules are classified into different types based on their functionality.
5) What is an ABAP report?
An ABAP report is a program that retrieves information from an internal table, external data source, or database table and displays it in a formatted manner. It can also accept input from the user and perform calculations or other actions based on the input.
6) What is the difference between a transparent table and a pooled table?
Transparent tables are the ones that are physically stored in the database and have a one-to-one relationship with the ABAP dictionary objects. On the other hand, pooled tables are used to store control data and are stored in the same physical table in the database. Pooled tables can have a one-to-many relationship with the ABAP dictionary objects.
7) What are the different types of data element and domain?
Data elements represent the structure and technical attributes of a field within a database table. They define the length, type and checks on a field. Domains represent the semantic properties of a field such as data type, length, value range, and input checks. There are different types of data elements and domains, such as Numeric, String, Date, and Time.
8) What is a table buffer?
Table buffers are temporary storage areas that hold frequently accessed data from database tables in the memory of the application server. They help improve the performance of an ABAP program by reducing the number of database accesses required.
9) How do you debug an ABAP program?
To debug an ABAP program, you can use the standard debugging tools provided by SAP. You can set breakpoints in the code, monitor variable values, and step through the program execution to identify and fix errors.
10) What is a BDC (Batch Data Communication) and how is it different from call transaction?
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BDC is a feature in ABAP used to transfer data from external systems into SAP using batch input sessions. It allows for the automated processing of large volumes of data. On the other hand, a call transaction is used to process single transactions in SAP by simulating user input.
11) What is an ALV (ABAP List Viewer) report?
An ALV report is a type of ABAP report that uses the ALV grid control to display data in a tabular format. It offers various features like filtering, sorting, and totals to aid in analyzing data. ALV reports can also handle user interactions like double-clicking on a row to perform additional actions.
12) What are the different types of internal tables?
Some of the commonly used internal tables in ABAP include standard, sorted, hashed, and index tables. These tables differ in terms of their structure and use, with each type having its unique advantages.
13) What is transport request and how is it created?
A transport request is a collection of ABAP objects that are moved together from one system to another in the SAP landscape. They are created using the Transport Organizer (SE01) transaction code and consist of the objects that have been modified in the Development system and need to be transported to the Quality or Production system.
14) What is Object Oriented ABAP?
Object Oriented ABAP (OOABAP) is an extension of the traditional ABAP programming language that supports object-oriented programming concepts such as classes, objects, inheritance, polymorphism, and encapsulation. It allows developers to create reusable code and develop complex applications in a modular and structured manner.
15) What is the difference between SELECT and SELECT SINGLE statements in ABAP?
The SELECT statement is used to retrieve multiple records from a database table, whereas the SELECT SINGLE statement can retrieve only a single record at a time. Using the SELECT SINGLE statement can improve the performance of the program, especially when searching for a specific record.
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