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SAP GUI is the graphical user interface client in SAP ERP's 3-tier architecture of database, application server and client.It is software that runs on a Microsoft Windows, Apple Macintosh or Unix desktop, and allows a user to access SAP functionality in SAP applications such as SAP ERP and SAP Business Information Warehouse (BW).
Remote Function Call (RFC) is the standard SAP interface for communication between SAP systems. The RFC calls a function to be executed in a remote system. [ 1 ] Remote function calls may be associated with SAP software and ABAP programming and provide a way for an external program (written in languages such as PHP , ASP , Java , C , or C++ ...
These interfaces can be used by external applications developed by customers and complementary software partners as well as by other SAP applications. Defined as API methods of SAP Business Object Types, these object types are used within the Business Framework to enable object-based communication between components.
Separation of user interface and business logic: One advantage of Web Dynpro over SAP GUI is the separation between business logic and user interface, and the structured development process with less implementation effort. Support of stateful application: The state of the application is kept in the back-end.
The database interface ensures optimized data access from within the ABAP environment through Open SQL. SAP propagates the outstanding capabilities of Open SQL for ABAP to Open SQL for Java and offers a variety of standard Application Programming Interfaces (APIs) to application programmers, such as SQLJ.
SAP ERP is enterprise resource planning software developed by the German company SAP SE. SAP ERP incorporates the key business functions of an organization. The latest version of SAP ERP (V.6.0) was made available in 2006. The most recent SAP enhancement package 8 for SAP ERP 6.0 was released in 2016.
According to SAP, PI reduces the TCO by providing a common repository for interfaces. The central component of SAP PI is the SAP Integration Server , which facilitates interaction between diverse operating systems and applications across internal and external networked computer systems.
All SAP data exists and all SAP software runs in the context of a SAP system. A system consists of a central relational database and one or more application servers ("instances") accessing the data and programs in this database. A SAP system contains at least one instance but may contain more, mostly for reasons of sizing and performance.