A subtype contains attributes that are common to all of its supertypes.
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Q5: Implementing overlapping subtypes requires the use of
Q6: Entity subtypes do not inherit the relationships
Q7: An entity supertype can have disjoint or
Q8: The relationships depicted within the specialization hierarchy
Q9: At the implementation level, the supertype and
Q11: The function of the primary key is
Q12: A design trap occurs when a relationship
Q13: Entity supertypes and subtypes are organized in
Q14: Overlapping subtypes are subtypes that contain a
Q15: The entity supertype contains common characteristics, and
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