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SAP ABAP interview questions and answers for Freshers 2023

April 15th, 2023 | Uncategorized

SAP ABAP interview questions and answers for Freshers

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SAP ABAP interview questions and answers for Freshers:

1. What is SAP ABAP?

SAP ABAP (Advanced Business Application Programming) is a programming language used for developing applications on the SAP platform. It is a high-level programming language that is used to create complex and large-scale business applications.

2. What is the difference between BDC and LSMW?

BDC (Batch Data Communication) is a technique used for uploading large amounts of data into SAP systems. LSMW (Legacy System Migration Workbench) is a tool used for data migration from non-SAP systems into SAP systems. BDC is a programmatic approach, whereas LSMW is a data migration tool.

3. What is the difference between ABAP and OOABAP?

ABAP (Advanced Business Application Programming) is a procedural programming language used for developing applications on the SAP platform. OOABAP (Object-Oriented ABAP) is an extension of ABAP that adds object-oriented programming features to the language.

4. What are the different types of data dictionary objects in ABAP?

There are several types of data dictionary objects in ABAP, including tables, views, structures, data elements, domains, and search helps.

5. What is a function module in ABAP? How is it different from a subroutine?

A function module is a self-contained program that can be called from other ABAP programs. It can be used to encapsulate business logic and can be reused across multiple programs. A subroutine, on the other hand, is a program that is called within another ABAP program and is used to perform a specific task.

6. What is the difference between a transparent table and pooled table in SAP?

Transparent tables are used to store data that is directly related to SAP business objects. Pooled tables are used to store data that is not directly related to SAP business objects, such as log data or temporary data.

7. What is an ABAP program exit? How do you implement it?

An ABAP program exit is a point in an ABAP program where custom code can be added to modify the program’s behavior. To implement an ABAP program exit, you need to identify the appropriate exit point in the program and then write and activate the custom code.

8. What is a BADI in SAP? How is it different from an exit?

A BADI (Business Add-In) is a point in the SAP system where custom code can be added to modify the system’s behavior. It is similar to an exit, but provides more flexibility and better performance. With a BADI, you can dynamically activate or deactivate the custom code, whereas an exit is activated statically at the time of implementation.

9. What is a user exit in SAP? How do you implement it?

A user exit is a point in an SAP system where custom code can be added to modify the system’s behavior. To implement a user exit, you need to identify the appropriate exit point in the system and then write and activate the custom code.

10. What are the different types of internal tables in ABAP?

There are three types of internal tables in ABAP: standard tables, sorted tables, and hashed tables. Standard tables are unsorted tables that can be accessed using an index or a key. Sorted tables are tables that are sorted according to a specific field, and can only be accessed using a key. Hashed tables are tables that use a hash algorithm to store and access data, and can only be accessed using a key.

11. What is SAP ABAP?

Answer: SAP ABAP stands for Advanced Business Application Programming. It is a programming language used for developing applications for the SAP R/3 system.

12. What is the difference between a structure and a table in ABAP?

 Answer: A structure is a group of fields with different data types that can be used for internal data storage, while a table is a collection of records with the same structure that can be stored in a database.

13. What is a data dictionary in SAP ABAP?

Answer: The SAP ABAP data dictionary is a central repository that contains the definitions of all the data elements, domains, structures, tables, and views used in an SAP system.

14. What is an internal table in ABAP?

Answer: An internal table is a data structure used to store data in memory during the execution of an ABAP program. It is similar to an array in other programming languages.

15. What is the difference between a select statement and a read statement in ABAP? Answer: A select statement retrieves data from a database table, while a read statement retrieves data from an internal table.
16. What is a function module in SAP ABAP?

 Answer: A function module is a reusable piece of code that performs a specific task in an SAP system. It can be called from other ABAP programs or external systems.

17. What is the difference between a global variable and a local variable in ABAP?

Answer: A global variable is visible and accessible throughout the entire program, while a local variable is only visible and accessible within a specific block of code.

18. What is a BADI in SAP ABAP?

 Answer: BADI stands for Business Add-In. It is a mechanism provided by SAP to enhance the functionality of standard SAP code without modifying it.

19. What is a class in SAP ABAP?

Answer: A class is a blueprint for creating objects in ABAP. It contains data and methods that define the behavior of the objects.

20. What is a module pool in SAP ABAP?

 Answer: A module pool is a collection of screens and ABAP code that are used to create interactive applications in an SAP system.

21. Q: What is an ABAP Dictionary?

A: ABAP Dictionary is a central repository that contains data definitions used in the SAP system. It stores all the data types, tables, structures, and fields used in an SAP system.

22. Q: What are the different types of ABAP Dictionary objects?

 A: There are several types of ABAP Dictionary objects, including tables, views, domains, data elements, search helps, lock objects, and match code objects.

23. Q: What is an ABAP program?

A: An ABAP program is a program written in the ABAP programming language that runs in the SAP system. ABAP programs can be developed to perform various tasks such as data processing, reporting, and application development.

24. Q: What is the difference between a transparent table and a pooled table?

 A: A transparent table contains data that can be accessed using a primary key, while a pooled table contains data that is not accessed using a primary key. Transparent tables are used for storing master data, while pooled tables are used for storing control data.

25. Q: What is the use of the ABAP data dictionary?

 A: The ABAP data dictionary is used to define and manage data types, data elements, domains, tables, and views used in the SAP system.

26. Q: What is the use of function modules in SAP?

A: Function modules are used in SAP to perform specific tasks that can be reused in different programs. They allow developers to create modular and reusable code, which helps to reduce development time and maintenance costs.

27. Q: What is an internal table?

A: An internal table is a data structure used to store data in memory during program execution. Internal tables can be used to perform various operations such as sorting, filtering, and aggregating data.

28. Q: What is a BDC (Batch Data Communication) program?

 A: A BDC program is used to transfer data from external systems into the SAP system. BDC programs automate the process of data entry, reducing the risk of errors and improving efficiency.

29. Q: What is the difference between a field symbol and a data reference variable?

 A: A field symbol is a pointer to a field in memory, while a data reference variable is a pointer to a data object. Field symbols can only be used with structured types, while data reference variables can be used with any data type.

 

30. Q: What is SAP ABAP?

A: ABAP stands for Advanced Business Application Programming. It is a programming language developed by SAP and is used to develop applications and modules for SAP ERP systems.

31. Q: What is the role of an ABAP developer?

A: The role of an ABAP developer is to design, develop, test and implement custom ABAP programs to support business processes in SAP ERP systems.

32. Q: What is a data dictionary in SAP ABAP?

 A: A data dictionary in SAP ABAP is a central repository where all the data definitions used in the system are stored. It is used to define tables, data types, structures, domains, and other data elements.

33. Q: What is the difference between a structure and a table in SAP ABAP?

A: A structure in SAP ABAP is a data type that defines a collection of related data fields. It does not contain any data records, but rather describes the layout and format of data. A table, on the other hand, is a data object that stores data records. It consists of one or more data fields, and each field can have its own data type.

34. Q: What is an internal table in SAP ABAP?

A: An internal table in SAP ABAP is a dynamic data object used to store and manipulate data within the program. It is similar to an array, but is more flexible in terms of size and structure. It can be created dynamically during program execution or can be defined in the ABAP program.

35. Q: What is a function module in SAP ABAP?

A: A function module in SAP ABAP is a collection of related ABAP statements that perform a specific task. It is used to encapsulate frequently used business logic in a reusable unit. It can be called from other ABAP programs or from external systems using Remote Function Call (RFC).

36. Q: What is an ALV report in SAP ABAP?

A: An ALV (ABAP List Viewer) report in SAP ABAP is a standard report created using the ALV function modules. It is used to display data in a tabular format with various options for sorting, filtering, and formatting the data.

37. Q: What is the difference between BDC and LSMW in SAP ABAP?

A: BDC (Batch Data Communication) and LSMW (Legacy System Migration Workbench) are two different methods used for data migration in SAP systems. BDC is used for batch input of data from external systems, while LSMW is used for migrating data from legacy systems to SAP systems.

38. Q: What is a BADI in SAP ABAP?

A: A BADI (Business Add-In) in SAP ABAP is an enhancement technique that allows custom code to be added to standard SAP programs without modifying the original code. It is used to implement business logic that cannot be achieved using standard SAP functionality.

39. Q: What is an IDoc in SAP ABAP?

 A: An IDoc (Intermediate Document) in SAP ABAP is a standard format for exchanging data between SAP systems and external systems. It is used to transfer business data from one SAP system to another or from SAP to non-SAP systems.

40. What is the difference between a transparent table and a pooled table?

A transparent table is a physical table in the database where data is stored. It has a one-to-one relationship with its dictionary definition. On the other hand, a pooled table is a logical table in the database where data is stored. It has a one-to-many relationship with its dictionary definition.

41. What are the different types of ABAP programs?

There are four types of ABAP programs:

 

Executable programs

Function modules

Class modules

Methods

42. What is an internal table?

An internal table is a temporary table that is used to store and manipulate data in ABAP programs. It is created and destroyed during program runtime.

43. What is a BADI?

BADI stands for Business Add-In. It is an enhancement technique in SAP that allows developers to add new functionality to existing SAP code without modifying it.

 

44. What is an RFC?

RFC stands for Remote Function Call. It is a communication protocol used in SAP systems to enable remote calls to function modules or programs in different SAP systems.

 

45. What is an ALV report?

ALV stands for ABAP List Viewer. It is a standard SAP tool used to display large amounts of data in a table format.

 

46. What is the difference between a function module and a subroutine?

A function module is a stand-alone ABAP program that performs a specific task and returns a result. It can be called from other programs using the CALL FUNCTION statement. A subroutine is a piece of code within a program that performs a specific task. It is called using the PERFORM statement.

 

47. What is the use of the SELECT-OPTIONS statement in ABAP?

The SELECT-OPTIONS statement is used to create a selection screen where users can enter one or more values for a field. It is often used in report programs to allow users to filter data based on their requirements.

 

48. What is the difference between a global variable and a local variable?

A global variable is a variable that can be accessed from any part of the program. It is declared outside of any subroutine or function module. A local variable is a variable that can only be accessed within the subroutine or function module in which it is declared.

49 Q: What is a Data Dictionary in SAP ABAP?

A: A Data Dictionary is a central repository that stores definitions of all the objects used in SAP ABAP programming. These objects include tables, data types, structures, and domains.

 

50 Q: What is a module pool in SAP ABAP?

A: A module pool is a collection of screens that are used to develop interactive programs in SAP ABAP. It consists of a flow logic, which defines the sequence of screens that the user will see, and a program logic, which defines the processing that takes place in response to the user’s inputs.

 

51 Q: What is a BADI in SAP ABAP?

A: A BADI (Business Add-In) is an enhancement technique used in SAP ABAP to add new functionality to standard SAP programs. It allows developers to add their own code to predefined points in the standard SAP code without modifying it.

 

52 Q: What is an ALV report in SAP ABAP?

A: An ALV (ABAP List Viewer) report is a type of report that displays data in a table format. It provides various features such as sorting, filtering, and subtotaling to help users analyze the data more effectively.

 

53 Q: What is the difference between a transparent table and a pooled table in SAP ABAP?

A: A transparent table is a standard database table in SAP ABAP that stores data. It has a one-to-one relationship with its corresponding database table. A pooled table, on the other hand, is a type of table that is used to store data from multiple application servers.

 

54 Q: What is the difference between a function module and a subroutine in SAP ABAP?

A: A function module is a self-contained piece of code that can be called from other programs or function modules. It can also be executed independently. A subroutine, on the other hand, is a part of a larger program and can only be called from within that program.

 

56 Q: What is a program variant in SAP ABAP?

A: A program variant is a feature in SAP ABAP that allows users to define their own default values for selection criteria in a report. It helps to save time and improve efficiency by predefining commonly used values.

 

57 Q: What is the difference between a field symbol and a data reference in SAP ABAP?

A: A field symbol is a pointer to a data object in SAP ABAP. It allows for dynamic access to data objects at runtime. A data reference, on the other hand, is a reference to a data object that is stored in memory. It is used to access data across different programs or function modules.

 

58 Q: What is the use of the GET parameter ID statement in SAP ABAP?

A: The GET parameter ID statement is used to retrieve the value of a system parameter in SAP ABAP. It is often used to retrieve user-specific settings such as the default printer or screen resolution.

59 Q: What is a transparent table?

A: Transparent tables are database tables that have a one-to-one relationship with a physical database table. The structure of the transparent table is identical to that of the database table.

 

60 Q: What is a cluster table?

A: Cluster tables are database tables that combine several smaller tables into one larger table. Cluster tables are used to improve database performance by reducing the number of database accesses.

 

61 Q: What is an internal table?

A: An internal table is a data structure used to store data within an ABAP program. It is similar to an array in other programming languages.

 

62 Q: What is a work area?

A: A work area is a temporary storage area used to hold data from a database table or an internal table during processing.

 

63 Q: What is an ABAP data dictionary?

A: The ABAP data dictionary is a central repository for metadata used by SAP applications. It contains information about database tables, data types, domains, and other objects used in SAP systems.

 

64 Q: What is an ABAP program?

A: An ABAP program is a set of instructions written in the ABAP programming language that is used to perform specific tasks within an SAP system.

 

65 Q: What is an ABAP report?

A: An ABAP report is an ABAP program that generates a report or list of data. It can be executed by users to display data from database tables or internal tables.

 

66 Q: What is an ABAP module pool?

A: An ABAP module pool is a collection of screens and ABAP code used to create interactive applications in SAP. It allows users to enter data and interact with the system.

 

67 Q: What is an ABAP function module?

A: An ABAP function module is a set of pre-written ABAP code that performs a specific task. Function modules can be called from other ABAP programs and are often used for common tasks such as date formatting or currency conversion.

 

68 Q: What is the difference between a structure and a table in the ABAP data dictionary?

A: A structure is a data type that defines a set of related fields, while a table is a data type that defines a set of related records or rows. In other words, a structure is a blueprint for a single data record, while a table is a blueprint for a collection of data records.

 

69 Q: What is an ABAP class?

A: An ABAP class is a data type used to define objects and their behavior in SAP systems. It contains data attributes and methods that can be used to perform specific tasks.

 

70 Q: What is a BADI (Business Add-In)?

A: A BADI is an enhancement technique used in SAP systems that allows developers to add custom logic to standard SAP processes. It is a predefined interface that can be implemented to extend the functionality of SAP applications.

 

71 Q: What is an enhancement spot?

A: An enhancement spot is a predefined location within an SAP program where custom ABAP code can be inserted to enhance the program’s functionality.

 

72 Q: What is a user exit?

A: A user exit is a predefined point in an SAP program where custom ABAP code can be inserted to modify the program’s behavior. User exits are often used to implement custom business logic or to integrate SAP systems with external systems.

 

73 Q: What is a BAPI (Business Application Programming Interface)?

A: A BAPI is a predefined interface used to access SAP business objects and their methods. It allows external applications to interact with SAP systems in a standardized way.

 

74 Q: What is a RFC (Remote Function Call)?

A: A RFC is a protocol used to call functions

75. What are the basic data types in ABAP?

The basic data types in ABAP include numeric (integer, float, packed decimal), character, date/time, and byte.

 

76. What are the different types of ABAP programs?

There are two types of ABAP programs: executable programs and library programs. Executable programs are standalone programs that can be executed by users. Library programs are reusable programs that can be called by other programs.

 

77. What are the different data dictionary objects in ABAP?

The data dictionary objects in ABAP include tables, views, domains, data elements, search helps, and lock objects.

 

78. What is an internal table?

An internal table is a data structure used to store and manipulate data within an ABAP program. It is similar to an array in other programming languages.

 

79. What is a function module?

A function module is a reusable subroutine that performs a specific task. It can be called from other ABAP programs or from external applications.

 

80. What is a BADI?

A BADI (Business Add-In) is a mechanism in SAP that allows developers to add custom functionality to standard SAP programs without modifying the original code.

 

81. What is an ABAP report?

An ABAP report is a program that generates a list or a formatted output. It can be executed from the SAP menu or by entering a transaction code.

 

82. What is the difference between a transparent table and a pooled table?

A transparent table is a database table that has a one-to-one relationship with a data dictionary table. A pooled table is a database table that is used to store data from multiple data dictionary tables.

 

83. What is an ABAP workbench?

The ABAP workbench is a development environment in SAP that provides tools for creating, editing, and testing ABAP programs and data dictionary objects.

 

These are some of the basic questions that you may encounter in a SAP ABAP interview. Be sure to familiarize yourself with the concepts and terminology of ABAP before the interview.

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