Restrict DELETE Permission on a Table in SQL

Denying DELETE Permission on a Table

Write a SQL query to deny DELETE permission on a table to a user.

Solution:

-- Deny DELETE permission on the Customers table to a user.
DENY DELETE ON Customers TO UserG;

Explanation:

• Purpose of the Query :
• The goal is to demonstrate how to explicitly deny DELETE permission on a table to a specific user.
• Key Components :
• DENY DELETE: Prevents the user from deleting data from the specified table.
• ON Customers: Specifies the table being restricted.
• TO UserG: Specifies the user losing the permission.
• Why Deny Permissions? :
• Explicitly denying permissions ensures that users cannot perform restricted actions.
• It complements GRANT and REVOKE for fine-grained access control.
• Real-World Application :
• In customer relationship management (CRM) systems, denying DELETE permissions prevents accidental data loss.

Additional Notes:

• DENY takes precedence over GRANT, so use it carefully.
• Regularly audit denied permissions to ensure they align with security policies.
• Important Considerations:
• Avoid overusing DENY, as it can complicate permission management.

For more Practice: Solve these Related Problems:

• Write a SQL query to deny DELETE permission on the "Orders" table to a user named "Intern".
• Write a SQL query to explicitly deny DELETE permission on the "Inventory" table to a role named "Guests".
• Write a SQL query to revoke DELETE permission on the "Transactions" table from all users except administrators.
• Write a SQL query to ensure that no user can delete records from the "AuditLogs" table.

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