If Data Replication Is Permitted in a Distributed Database Network

question 49

Multiple Choice

If data replication is permitted in a distributed database network ____.

• A) one site must contain a copy of every table
• B) the maximum number of copies that can be made of any one table is equal to half the number of computers (sites) on the network
• C) distributed joins are never necessary
• D) copies of tables can be located at the sites that most heavily use them
• E) a copy of every table must be placed at every site

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