Distributed Databases The problem of concurrency control is more complex in a distributed database. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Replication may use either synchronous or asynchronous distributed database technologies, although asynchronous technologies are more typical in a replicated environment. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A distributed database has which of the following advantages over a centralized database? Software complexity Software cost Slow Response Modular growth Software complexity Software cost Slow Response Modular growth ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Which of the following is a disadvantage of replication? If the database fails at one site, a copy can be located at another site. Each site must have the same storage capacity. Each transaction may proceed without coordination across the network. Reduced network traffic If the database fails at one site, a copy can be located at another site. Each site must have the same storage capacity. Each transaction may proceed without coordination across the network. Reduced network traffic ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases The cost to perform a snapshot refresh may depend on whether the snapshot is simple or complex. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Replication should be used when which of the following exist? All of these When transmission speeds and capacity in a network prohibit frequent refreshing of large tables. The application's data can be somewhat out-of-date. When using many nodes with different operating systems and DBMSs and database designs. All of these When transmission speeds and capacity in a network prohibit frequent refreshing of large tables. The application's data can be somewhat out-of-date. When using many nodes with different operating systems and DBMSs and database designs. ANSWER DOWNLOAD EXAMIANS APP
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