Buy custom The Relavance of Referential Integrity
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| Topic: |
Technology
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| Number of pages / Number of words: |
4 / 866 |
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Without referential integrity, one would enter unmatched foreign key values. The relational model does not allow these orphan records. Even though the database system may allow one to create orphans, the developer's job is to prevent them. The easiest way to prevent orphans is to implement referential integrity...
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The easiest way to prevent orphans is to implement referential integrity.
When to implement Referential Integrity?
One should enable referential integrity to every database. There are certain conditions that must be met before referential integrity is implemented:
? The relationship for which there is enforcement of referential integrity must be based on a primary key or a unique index...
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