A quick way to determine whether a column can contain a NULL value is to issue the ____________________ command,followed by the table name.
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Q117: A(n)_ constraint requires that,if an entry is
Q118: A constraint is always enforced at the
Q119: A maximum of _ PRIMARY KEY constraints
Q120: Any type of constraint can be created
Q121: If a(n)_ constraint is being dropped,then only
Q123: A NOT NULL constraint can be added
Q124: What is the relationship between a NOT
Q125: The _ clause of the ALTER TABLE
Q126: A NOT NULL constraint will display the
Q127: The _ command can be used to
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