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what is Constraint? How many types of constraints in SQL ?
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Answer Posted / nivetha sri
Constraint are the certain condition which is used to
limit the data in the table.It can used before creating the
table and after creating the table.
TYPES OF CONSTRAINTS
1] Primary key
2]Foreign key
3]Unique key
4]Check
5]Not Null
6]Default
| Is This Answer Correct ? | 1 Yes | 1 No |
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