DirectConnect for z/OS Option consists of a server and one or more service libraries. The server provides the framework in which the service libraries operate. The DB2 access service library is the program component of DirectConnect for z/OS Option that works with the Mainframe Connect DB2 UDB option to access DB2 data.
Figure 1-2 shows the relationship of the DB2 access service library with components of the client workstation, LAN, and mainframe environments.
Figure 1-2: DirectConnect for z/OS Option environment
As shown in Figure 1-2, the process is as follows:
The request from a client application uses the LAN to communicate with the DirectConnect server.
Either TRS or a DB2 access service routes the request to the appropriate CICS region.
The request accesses data on the DB2 UDB database.
For more information on how to create multiple TRS libraries, see the Mainframe Connect DirectConnect for z/OS Option Transaction Router Services Users Guide.
