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The _ _ _ _ _ _ _ _ states that no primary key attribute may be null. Question 1 9 Select one: a .
The states that no primary key attribute may be null. Question Select one: a referential integrity constraint b entity integrity rule c partial specialization rule d range domain rule
The states that no primary key attribute may be null.
Question Select one:
a
referential integrity constraint
b
entity integrity rule
c
partial specialization rule
d
range domain rule
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