Free practice · boolean · easy
Practice
Apply a subset rule
If every priority ticket is also an open ticket, then the priority tickets form a subset of the open tickets.
Category relationship map
Membership, overlap, and exclusion change the count
Membership
MemberInside
ExcludedOutside
Relationship
SubsetFully contained
OverlapShared members
Reconcile
UniqueA + B − overlap
Define each set before placing stable record identities, then reconcile overlap members exactly once in the unique total.