In ECDA Option for ODBC, the DirectConnect server provides the framework in which the service libraries operate. Within the service libraries, each access service accesses data from a particular target, such as DB2 UDB, Microsoft SQL Server, and ODBC-accessible databases.
The request from a client application goes over the LAN to the DirectConnect server. The access service routes the request through the ODBC driver to the target and accesses data from the database. DirectConnect Manager accesses the administrative service library to manage the DirectConnect server and provide a view of the servers, service libraries, and services.