The ______________________ key for a record must never be allowed to have a NULL value.
Correct Answer:
Verified
Q190: Every nonkey field is called a(n):
A) secondary
Q191: Database design should proceed only if the
Q192: A(n) _ is the physical model or
Q193: During the creation of database schemas, _
Q194: _ integrity for a database means that
Q196: _ integrity means that appropriate controls must
Q197: _ integrity means that the architecture of
Q198: A(n) _ error exists when a foreign
Q199: A(n) _ is an alternate name for
Q200: _ establishes which business locations need access
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