Domain 4- Maintain Database- Integrity Constraints

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Using Integrity Constraints is extremely important. Integrity Constraints provides a way of ensuring that data that are entered in a database by authorized user do not result in a loss of data quality. Integrity Constraints could either be a specification of uniqueness for values of a column or validation for values of a column. Referential integrity is another strategy that is used to ensure data quality in relational databases. Referential integrity ensures that there is consistency between tables that are linked in the relational database.