Define constraints with any three examples.
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If you define a CHECK constraint on a table it can limit the values in certain columns based on values in other columns in the row. Example: ... The CHECK constraint specifies that the column "P_Id" must only include integers greater than 0.
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The definition of a constraint is something that imposes a limit or restriction or that prevents something from occurring. An example of a constraint is the fact that there are only so many hours in a day to accomplish things. Confinement or restriction. ...
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