What are database permissions and how do they work?

What are database permissions and how do they work?

Database permissions are rules that determine what actions users can perform on a database, such as read, write, or delete.

How can I grant permissions to a user in SQL?

You can grant permissions using the GRANT statement. For example: GRANT SELECT ON database_name TO user_name;

What is the difference between roles and permissions?

Roles are collections of permissions that can be assigned to users, simplifying permission management.

Can I revoke permissions once they are granted?

Yes, you can revoke permissions using the REVOKE statement, like this: REVOKE SELECT ON database_name FROM user_name;