Foreign Keys (FK)

External Article

New SQL Monitor Custom Metric: Untrusted Foreign Keys

  • Article

A foreign key points to a primary key that must exist in another table, for example, column X in Table 1 must also be present in Table 2. The key protects this link, and only valid data can be inserted in the foreign key column. An untrusted foreign key may threaten a database’s referential and data integrity.

2013-08-20

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