Ensuring that every value of a foreign key matches a value of the corresponding primary key is an example of a referential integrity constraint.
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Verified
Q3: A key must be unique.
Q4: A double arrow notation,A →→ B,is used
Q5: Candidate keys may or may not be
Q6: Explain the possible interpretations of a null
Q7: Although Microsoft Access is a personal database,the
Q9: Which of the following is not true
Q10: _ was the developer of the relational
Q12: In the relational model,each row of a
Q13: A key that contains more than one
Q96: Explain the terms relation,tuple,and attribute.
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