. Give a brief definition of each of the following terms O Multivalued attribute m) Derived attribute (in) Weak relationship (iv) Disjoint subtypes V Overlapping subtypes [10 marks] b. What is a Database Management System (DBMS)? List two advantages and two disadvantages in using DBMS. (6 marks] c. List four advantages and two disadvantages of Distributed Database Management System (DDBMS [6 marks! d. List and explain any three transparency features of a DDBMS. [3 marks