Technical Article

Techniques for Uniquely Identifying Database Records

When designing and creating a data model for a data-driven application, the records in tables must each be uniquely identifiable. By having a unique value associated with each record, individual records can be selected, updated, or deleted. Being able to uniquely identify records is so important and standard in a database system that databases allow those designing a database table to specify what column (or columns) make up the primary key.

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Question of the Day

Identities and Sequences I

When thinking of the Identity property for auto incrementing columns and sequences for the same action, which are explicitly linked to increment a number in a table when a new row is added?

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