Understanding Primary Key: The Foundation of Relational Databases

A primary key is a unique identifier for a record in a database table, ensuring that each entry is distinct. It plays a crucial role in maintaining data integrity and efficient querying in relational databases. This article explores the concept of primary keys, their significance in database design, implementation strategies, and common practices. Learn how to define, create, and manage primary keys, along with their implications for table relationships and data normalization.

• database design
• primary key
• data integrity
• relational databases
• unique identifier
• sql
• data management
• table relationshipstext

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