In a recursive relationship
A、Therelationshipcouldbemandatoryateitherend
B、Allofthese
C、Theforeignkeymusthavearolenametoavoidattributeduplication
D、Therelationshipcouldbeanidentifyingrelationship
E、Noneofthese,recursiverelationshipsarenotallowedinDataModels
发布时间：2025-10-28 09:26:43
