You use the LEGAL clause of the ALTER TABLE command to ensure that only legal values satisfying a particular condition are allowed in a given column.

Name: You use the LEGAL clause of the ALTER TABLE command to ensure that only legal values satisfying a particular condition are allowed in a given column.
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Question

You use the LEGAL clause of the ALTER TABLE command to ensure that only legal values satisfying a particular condition are allowed in a given column.​

Quizplus · Accepted Answer

The LEGAL clause does not exist in SQL. To enforce conditions on column values, you would use constraints like CHECK, NOT NULL, UNIQUE, etc.

You Use the LEGAL Clause of the ALTER TABLE Command