Answers

2014-07-28T22:22:44+05:30
A constraint is a property assigned to a column or the set of columns in a table that prevents certain types of inconsistent data values from being placed in the column. Constraints are used to enforce the data integrity.
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2014-07-29T08:31:39+05:30
Contraits are priperties assignned to the columns in order to prevent garbage to be stored in it.its function is to enforce the data inyegrity.
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