Data Integration Service
Uses the adapter plug-in at run time to read data from or write data to the data source.
Uses the client plug-in to create and update connections, import metadata, and perform type system conversions.
Uses the adapter plug-in to create and update the connection management properties.
Stores the connection objects that an end user creates using the adapter plug-in.
Model Repository Service
Stores the data source metadata and data source operation that an end user creates using the adapter plug-in.