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REVOKE Statement

The REVOKE statement is used to remove previously granted permissions from users or roles. It ensures that users no longer have access to certain database objects or operations.

Example: Revoking SELECT Permission

REVOKE SELECT ON FreedomFighters FROM 'user123';

Output:

User user123 no longer has permission to select data from the FreedomFighters table.

Do's and Don'ts

Do's

  • Use REVOKE to remove permissions when they are no longer needed.
  • Ensure that critical permissions are not revoked accidentally.
  • Review and audit permissions regularly to maintain security.

Don'ts

  • Don't revoke permissions without informing affected users, as it may disrupt workflows.
  • Don't forget to document permission changes for future reference.
  • Don't assume that revoking permissions immediately removes all access; consider inheritance and role-based permissions.
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