Consider a database of a company where a relation Employee (name, address, salary, branch) is fragmented horizontally by branch. Assume that each fragment has two replicas: one stored at site A and...

Consider a database of a company where a relation Employee (name, address, salary, branch) is fragmented horizontally by branch. Assume that each fragment has two replicas: one stored at site A and one stored locally at the branch site. Describe a good strategy for the following queries entered at site B.

Find the lowest-paid employee in the company