what is Sap BASIS

BASIS Stands for Business Application software integrated solution.

Basis is the administration of the sap system.

1. A set of middle-ware program and tools that provide the underlying base that enable application to be interoperable across OS.
2. Sap basis includes a DBMS ,GUI and client server architecture. 

• GUI Stands for "Graphical User Interface
• DBMS Stands for "DBMS, Database Management System.

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• what is sap ?
• SAP