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Foreign Key Discovery in SQL Server & Azure SQL DB

Josephine Bush walks around town with a lantern looking for a good foreign key:

There are plenty of times I’m called upon to fix data. To do this, I must know what dependencies are in the database. Foreign keys are a crucial aspect of maintaining data integrity within relational databases. They establish relationships between tables, ensuring data references remain consistent and accurate. In an Azure SQL Database, identifying and managing foreign keys is essential for maintaining a well-structured and reliable database architecture.

Click through for a primer on foreign key constraints, a few ways to find them, and some closing thoughts on working with tables containing foreign key constraints.