A CHECK constraint requires that a data value meet a certain condition before the record is added to the database table.
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Q1: Any constraint can be created at the
Q3: A constraint for a composite primary key
Q4: A primary key is usually given the
Q5: The CONSTRAINT keyword is required if the
Q6: A NOT NULL constraint can only be
Q7: The table level approach can be used
Q8: The MODIFY clause is used with the
Q9: A PRIMARY KEY constraint will make certain
Q10: Constraints are rules used to enforce business
Q11: A constraint is always enforced at the
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