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ABAP (Advanced Business Application Programming) is the name of SAP’s proprietary, fourth-generation programming language. It was specifically developed to allow the mass-processing of data in SAP business applications.
Each ABAP program has the program attribute "ABAP language version", which is defined internally by a version ID. The version of a program determines which language elements and which repository objects can be used in the program and which syntax rules apply.
By the end of this module, the beginner programmer will work with the basics of ABAP syntax, such as data types, variables, constants, and literals, chained statements, adding comments to source code, perform arithmetic calculations, use system information, debug a program, create an ABAP list and process character strings using the ABAP language.
ABAP is a 4GL language developed specifically for the mass processing of data in business applications and, in addition to integrated database access, has the following characteristics when compared with the elementary languages in which such functions are usually stored in libraries:
ABAP Language Basics. Learn the ABAP language, from formatting code to using variables and constants. Understand how to add binary logic to applications, create simple user interfaces, and more. Working with Data. Create data dictionary objects and program ABAP applications to process and read data from a database.
The main role of ABAP programs in the application layer is the processing and formatting of data from the database layer and its transfer to and receipt of input from the presentation layer or the communication components.
Data Objects in ABAP. A data object in an ABAP program represents a reserved section of the program memory. ABAP knows three types of data objects: Variables, Constants, and Literals. Variables. A variable is a data object with content that can change during runtime. A variable is identified by a name.
