Question

Explain the importance of relational DBMS and primary key.​

Answer 1

Answer:

Primary and foreign keys. Primary and foreign keys define the relational structure of a database. These keys enable each row in the database tables to be identified, and define the relationships between the tables

Answer 2

Choosing a primary key is one of the most important steps in good database design. A primary key is a table column that serves a special purpose. Each database table needs a primary key because it ensures row-level accessibility.

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