One or more fields in a database table are referred to as the SQL key concept. In addition to facilitating the establishment of linkages between tables, keys speed up data retrieval.
A primary key is a special code that each record in a database has that keeps duplicate values from occurring and facilitates quick access to and manipulation of the data inside the table. Therefore, one of the essential components of database design is a primary key.
The types and applications of primary keys in SQL Server will be covered in detail in this article.
Learn more: https://blog.devart.com/sql-server-primary-key.html
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