Question: What is the idea behind distributed query processing using the semijoin operation? Write your answer with an explanation? (1.5 Marks) What degree of replication is

What is the idea behind distributed query

What is the idea behind distributed query processing using the semijoin operation? Write your answer with an explanation? (1.5 Marks)

What degree of replication is recommended in the following environment? (1.5 Marks)

High availability is required, transaction can be submitted by any site, and most transactions are retrievals.

Availability could be locally tolerated and certain transactions that access particular parts of the database are mostly submitted at a particular site.

What is the idea behind distributed query processing using the semiioin operation? Write your answer with an explanation? (1.5 Marks) b. What degree of replication is recommended in the following environment? (1.5 Marks) 1. High availability is required, transaction can be submitted by any site, and most transactions are retrievals. 2. Availability could be locally tolerated and certain transactions that access particular parts of the database are mostly submitted at a particular site

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