The Relavance of Referential Integrity

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Bonnie B


Date added:

March 31, 2015







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4 / 866


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This facility maintains relationships between data and protecting data integrity. What is Referential Integrity? The relational model enforces referential integrity. That means one must enable the system referential integrity feature to meet relational rules. This can be as simple as just enabling referential integrity between tables...
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This can be as simple as just enabling referential integrity between tables. There are also consequences of doing so or not doing so. There are three types of integrity: ? Entity- The user must uniquely identify each record. ? Referential ? Each foreign key value must have a matching primary key value in a related table (or be Null) ? Business - These are rules that are specific to the business and unrelated to relational database theory...
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