Database integrity and database security, Database Management System

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Question :

(a) Differentiate between database integrity and database security

(b) Database security involves measures to avoid loss of privacy and loss of confidentiality. Describe what is meant by the above terms.

(c) In the context of database security explain how the following database features help to enforce security in the database system:

(i) Access Control
(ii) Authorisation
(iii) Views

(d) Differentiate between a Mandatory Access Control and a Discretionary Access Control. Which one is more rigid to the modification of the privilege assigned to users?

(e) Write SQL code to prepare a view of name Toronto_view that contains all the record of customers(Customer_ID, Customer_Name, Customer_Address, City, State, Postal_Code) that resides in the city of Toronto.

(f) Write SQL code to give the select, update, delete and insert privilege to the view created above to Tom. The update privilege will only allow Tom to update the customer_name column only.


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