This section describes how to use low-level MDA interfaces to make queries and connections and obtain the required data from a specific session. For most applications, the MDA subscriber factory and subscriber handler interfaces described in Overview of using MDA provide all needed functionality. You might want to use low-level MDA interfaces when you want to do the following:

The SessionManagerFactory event object is the main starting point for all applications that want to use the low-level MDA interfaces. This provides the application with an interface to query and control the session that it needs to use. The MDManagerFactory event object is the starting point for applications to create all of the necessary MDA Manager objects used to query and connect to the specific session datastreams.