Discussion
Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?
Answer: C
Correct answer: An intrarelation constraint
Intra means within: the constraint compares two columns of the same row in the same table, as in requiring a discounted price to be less than the list price. An interrelation constraint compares values across tables, a domain constraint enumerates permitted values, and a range constraint bounds one column between limits.
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