What is the importance of primary keys in a relational database?

Primary keys in a relational database are crucial as they uniquely identify each record in a table. They ensure the integrity and accuracy of data by preventing duplicate entries and ensuring that each record can be easily accessed and linked to related records in other tables through foreign key relationships. Without primary keys, it would be difficult to maintain the relationships between tables, query the data efficiently, and ensure the database is normalized and structured correctly. Overall, primary keys play a vital role in maintaining the consistency and reliability of the database.

This mind map was published on 8 March 2024 and has been viewed 83 times.