A(n) _____ is the attribute in the supertype entity that determines to which entity subtype each supertype occurrence is related.
A) subtype discriminator
B) inheritance discriminator
C) specialization hierarchy
D) entity supertype
Correct Answer:
Verified
Q24: Within a specialization hierarchy, every subtype can
Q25: A specialization hierarchy can have _ level(s)
Q26: Nonoverlapping subtypes are subtypes that contain a(n)
Q27: At the implementation level, the supertype and
Q28: Overlapping subtypes are subtypes that contain _
Q30: The default comparison condition for the subtype
Q31: A partial completeness constraint is represented by
Q32: The purpose of an entity_ is to
Q33: A(n)_ is a generic entity type that
Q34: In the context of total completeness, in
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