In this section the main system interfaces are described in greater detail. The R/3 middleware or common kernel is made up of central interfaces. These are as follows:
The interface with the operating system.
The interface with database.
The interface for presentation.
The communication interface could be seen as a special type of interface that directly or indirectly is present in the other three types.
For compatibility and portability reasons, all these interfaces are grouped together in the central interface functions of the SAP system kernel. The interfaces in the SAP system are a group of software programs running as daemon processes in the UNIX operating system or as services on Windows NT, which is a background ...