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The _ _ _ _ _ specifies whether each entity supertype occurrence must also be a member of at least one subtype. a . uniqueness
The specifies whether each entity supertype occurrence must also be a member of at least one subtype.
a uniqueness factor
b attribute inheritance
c completeness constraint
d specialization hierarchy
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Database Administrator Limited Edition
Authors: Martif Way
1st Edition
B0CGG89N8Z
