True Or False

Question 11 :

Data replication is favored where most process requests are read-only and where the data are relatively static.


A). True
B). False
Answer : Option A

Question 12 :

The cost to perform a snapshot refresh may depend on whether the snapshot is simple or complex.


A). True
B). False
Answer : Option A

Question 13 :

The semijoin approach saves network traffic.


A). True
B). False
Answer : Option A

Question 14 :

In a semijoin, only the joining attribute is sent from one site to another, and then only the required rows are returned.


A). True
B). False
Answer : Option A

Question 15 :

The problem of concurrency control is more complex in a distributed database.


A). True
B). False
Answer : Option A