SAP R/3 is based on a 3-tier client-server architecture, which separates presentation, application, and database layers. This design provides scalability, flexibility, and better performance. Three-Tier Architecture: 1. Presentation Layer (Client Tier) Interface between the user and SAP system Usually a SAP ...
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1. Workbench Request Contains cross-client objects. These are usually repository objects that affect the entire system, not just one client. Examples: ABAP programs, Function Modules, Classes Dictionary objects (Tables, Views, Data Elements, Domains) Screens, Module Pool programs, etc. Once transported, the change is available in all clients ...
A segment in IDocs (Intermediate Documents) is a structure that groups related data fields. Each segment has: A unique name (e.g., E1KNA1M for customer master data). Defined fields with fixed length and data types. A hierarchy (segments can have child segments). Create a segment. (WE31) Create ...
Joins combine rows from two or more tables based on a related column, usually a key field. ABAP supports various join types (INNER JOIN, LEFT OUTER JOIN, etc.) mostly used inside Open SQL queries. How to Use Joins: SELECT a~vbeln, a~erdat, b~posnr, b~matnr
This report is a sample program that demonstrates how a user can enter and organize different kinds of input on an SAP screen. It includes simple fields like dates, codes, and names where you can type in values. It also ...
In SAP, updates to the database are not always executed immediately. Instead, the system uses an update task mechanism to ensure data consistency, improve performance, and provide rollback control. These updates can run in two modes: Synchronous (V1), where critical ...
ALV (ABAP List Viewer) is used to display reports in a structured, interactive way. A Block List means you display multiple ALV lists one below another in the same output. Example: You want to show MARA (Material Master general data) and then, ...
It’s an ABAP OO class that displays data in a grid (table-like format) inside a screen container. Unlike the simpler CL_SALV_TABLE, this grid is fully interactive and customizable. Main Features Editable cells → You can let users change data directly in the grid. Field ...