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Title: The UNIQUE constraint differs from the PRIMARY KEY constraint in what way? Post by: nawal on Jan 31, 2018 The UNIQUE constraint differs from the PRIMARY KEY constraint in what way?
a. The UNIQUE constraint does not allow NULL values. b. The UNIQUE constraint can be created at either the column level or the table level. c. The UNIQUE constraint allows NULL values. d. The UNIQUE constraint ensures that a specific condition is true before a data value is added to a table. Title: The UNIQUE constraint differs from the PRIMARY KEY constraint in what way? Post by: Cologicoon on Jan 31, 2018 Content hidden
Title: The UNIQUE constraint differs from the PRIMARY KEY constraint in what way? Post by: nawal on Jan 31, 2018 Bravo this is awesome
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