Distributed Databases An increasingly popular option for data distribution as well as for fault tolerance of any database is to store a separate copy of the database at each of two or more sites. True False True False ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases The problem of concurrency control is more complex in a distributed database. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A distributed database is which of the following? A single logical database that is spread to multiple locations and is interconnected by a network A single logical database that is limited to one location. A loose collection of file that is spread to multiple locations and is interconnected by a network A loose collection of file that is limited to one location. A single logical database that is spread to multiple locations and is interconnected by a network A single logical database that is limited to one location. A loose collection of file that is spread to multiple locations and is interconnected by a network A loose collection of file that is limited to one location. 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. Reduced network traffic Each site must have the same storage capacity. Each transaction may proceed without coordination across the network. If the database fails at one site, a copy can be located at another site. Reduced network traffic Each site must have the same storage capacity. Each transaction may proceed without coordination across the network. ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A distributed database can use which of the following strategies? Totally centralized at one location and accessed by many sites Partially or totally replicated across sites Partitioned into segments at different sites All of these Totally centralized at one location and accessed by many sites Partially or totally replicated across sites Partitioned into segments at different sites All of these ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Synchronization for pull replication is less disruptive and occurs only when needed by each site, not when a central master site thinks it is best to update. True False True False ANSWER DOWNLOAD EXAMIANS APP
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