IT Placement Papers  Database Database Admin
This category contains Database Admin Interview Questions and Answers |
When do you get constraint violation? What are the types of constraints?
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Database returns an error message when a constraint is violated.
Differnet type of constrains;
1.Domain Constraints:A Domain constraint deals with one or more columns
2.Entity Constraints
3.Referential Integrity Constraints.
4.Key Constraints
4.1.Primary Key Constraints
4.2 Foreign Key Constraints
4.3 Unique key Constraints
4.4 Check constraint
4.5 Default constraint
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