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Can an Integrity Constraint be enforced on a table if some
existing table data does not satisfy the constraint ?

Answers were Sorted based on User's Feedback



Can an Integrity Constraint be enforced on a table if some existing table data does not satisfy the..

Answer / sandeep desai

No.
Eg:-
Consider Table emp
Assume there are only 5 records in emp
and in emp_sal column values are (1200,1400,4500,2000).
Now if I try to create a check constraint on emp_sal column
for the range between 2000 and 4000 then an error is thrown
since values below this range also exist in emp_sal column.

Is This Answer Correct ?    4 Yes 0 No

Can an Integrity Constraint be enforced on a table if some existing table data does not satisfy the..

Answer / orawhiz

No.

Is This Answer Correct ?    0 Yes 0 No

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