Structured Query Language (SQL) is a computer language. Relational DBMS uses it to manage data.

Which DBMS does use keys?

Relational (SQL) databases use different DBMS keys.

Can multiple tables have the same primary Key?

Yes. In multiple tables, you can have the same column names as the primary key.

Yes. In order to maintain integrity, a table must always have a primary key. Additionally, a table only has one primary key.

Ans. It is an additional or alternative key in addition to the primary key to locate specific data.

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There is a lot of data available in this digital world. Every computer and application works with a database system.…

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