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What is referential integrity?

April 26, 2017integrity referential

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What is referential integrity?

2 Answers

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A202) Referential integrity refers to the consistency that must be maintained between primary and foreign keys, i.e. every foreign key value must have a corresponding primary key value.

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Maintaining data integrity through a set of rules that restrict the values of one or more columns of the tables based on the values of primary key or unique key of the referenced table.