2.1 In designing a database, what is the referential integrity rule? (a) The primary key in a...
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2.1 In designing a database, what is the referential integrity rule?
(a) The primary key in a table should not be null.
(b) The foreign key in a table should not be null.
(c) Each table must have a primary key and a foreign key.
(d) Two of the above are correct.
(e) None of the above is correct.
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Related Book For
Modeling And Designing Accounting Systems Using Access To Build A Database
ISBN: 9780471450870
1st Edition
Authors: Laura R. Ingraham, C. Janie Chang
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