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Distributed Databases - Technical MCQs

Q1:

A semijoin is which of the following?

A Only the joining attributes are sent from one site to another and then all of the rows are returned.

B All of the attributes are sent from one site to another and then only the required rows are returned.

C Only the joining attributes are sent from one site to another and then only the required rows are returned.

D All of the attributes are sent from one site to another and then only the required rows are returned.

ANS:C - Only the joining attributes are sent from one site to another and then only the required rows are returned.

No answer description is available.