All of the Following Are Principles of Data Replication in a Distributed

question 19

Multiple Choice

All of the following are principles of data replication in a distributed database network, except ____.

• A) place a copy of every table at a central node to avoid having a bottleneck
• B) place copies of tables at the sites that use them most heavily in order to minimize telecommunications costs
• C) ensure that there are at least two copies of important or frequently used tables to realize the gains in availability
• D) limit the number of copies of any one table to control the security and concurrency issues
• E) avoid any one site becoming a bottleneck to maintain performance

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