Sap abap entry-level training

Shanghai 51sap is a professional sap training center that provides professional sap ABAP training, SAP development training, and SAP implementation module learning. SAP initially developed the ABAP language for internal use only to provide an optimized working environment for application programmers. Learn the ABAP language without any worries about employment.

ABAP (SAP application development)

1. What is ABAP.

Definition: ABAP = advanced business application program, an advanced enterprise application programming language.

SAP initially developed the ABAP/4 (Advanced Commercial Application Design) language for internal use only, providing an optimized working environment for application programmers. It has been constantly improved and modified to meet business needs. Now, ABAP/4 has become the only tool for SAP to develop all its own applications.

ABAP/4 is the fourth generation of languages that support structured programming. It combines all common control structures and modular concepts. At the same time, it also supports object-oriented programming methods, which opens up a broader space for application development of ABAP. It can also be integrated with other programming languages, such as VB, Java, C/C ++.

Ii. Some features of ABAP.

1. ABAP/4 supports commercial data types and operations. You can use special date and time fields for calculation. The system automatically performs the required type conversion.

2. The ABAP/4 Report program is used to analyze data in the database table. The analysis results can be displayed on the screen or sent to the printer. Logical databases support Report programs.

3. ABAP/4 allows you to define and call subprograms. You can also call subprograms of other programs. Parameters can be transmitted from or to a subroutine in various ways.

4. ABAP/4 contains a special subroutine called a function module. You can create and maintain function modules in the central database. The function module between the calling program and the subroutine has a clearly defined data interface. They can be tested separately in the independent mode of the calling program.

5. ABAP/4 contains an SQL subset called Open SQL. With open SQL, you can read and Access database tables, regardless of the database system used.

6. ABAP/4 organizes the dialog program into a module pool containing the dialog module. Each dynamic program (a "dynamic program" composed of a screen and Its stream logic) is based on an ABAP/4 dialog program. The stream logic includes the call to the ABAP/4 dialog module.

Iii. Advantages of ABAP.

Advantage 1: ABAP/4 is an object-oriented language. It supports encapsulation and inheritance. Encapsulation is the basis of object-oriented, while inheritance is an important feature built on encapsulation.

Advantage 2: ABAP/4 is event-driven.

Advantage 3: ABAP/4 is similar to Cobol.

Advantage 4: ABAP/4 is suitable for generating reports.

Advantage 5: ABAP/4 supports database operations.

　
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