a) Considering the data availability is the key requirement of an organization, is it preferable to have a remote backup site instead of a distributed database system? Discuss.

b) Consider a banking system consisting of four branches in four different cities. Each branch has its own computer system, with a database of all the accounts maintained at that branch In view of the above context, discuss whether a distributed database system can be a good solution?

c) Assume that you are working as Database Administrator for a certain organization. Backup is an important operation for your database systems. Identify and discuss the different backup types. Which support different situations where they could be applied.