Release 10.1A: OpenEdge Development:
Progress 4GL Reference

FIRST-DATASET attribute

A handle to the first dynamic ProDataSet object created in the current OpenEdge session.

Data type: HANDLE

Access: Readable

Applies to: SESSION system handle

After finding the first entry, you can find the remaining entries in the list by using the NEXT-SIBLING attribute for each dynamic ProDataSet object. Use the NEXT-SIBLING attribute to get the next entry in the list of ProDataSet object handles created in the current OpenEdge session.