• If TDV has introspected a large number of resources for a given data source, introspecting this source again is an expensive operation.

• Reintrospection brings all new resources that have been added to the source after the most recent introspection, if the Detect New Resources During Re-Introspection is selected on the Data Source Introspection/Properties tab.

• If you want to add only a few new resources to the TDV, it might be better to newly introspect the resources rather than reintrospect them, because introspection only targets the selected resources.