About Query-Based Collections
Query-Based Collections, also known as Set Groups, are logical bundles of Sets, which are queries made against the EmpowerID Identity Warehouse that return collections of Assignees (commonly people) or resources. Simply put, Set Groups or Query-Based Collections are sets grouped together with a friendly name for resource management.
Membership within a Set Group is dynamic. Each compilation of the Set Compiler Job adds and removes objects from each Set Group based on the results of the Set queries belonging to those Set Groups. For example, if you have an "All Engineers in New York" Set Group and hire a new engineer in the New York location named "John," at the next compilation of the Set Compiler Job EmpowerID will add John to that Set Group because he will be returned as by the Set query. If John later relocates to Sydney, at the next compilation of the Set Compiler Job after his relocation, he will be removed from the Set Group because he is no longer returned by the Set.