The problem of concurrency control is more complex in a distributed database.
A). True
B). False
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
The semijoin approach saves network traffic.
A). True
B). False
The cost to perform a snapshot refresh may depend on whether the snapshot is simple or complex.
A). True
B). False
Data replication is favored where most process requests are read-only and where the data are relatively static.
A). True
B). False