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 A distributed database has which of the following advantages over a centralized database? Slow Response Software complexity Modular growth Software cost Slow Response Software complexity Modular growth Software cost ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A distributed database is which of the following? A loose collection of file that is spread to multiple locations and is interconnected by a network A single logical database that is limited to one location. A single logical database that is spread to multiple locations and is interconnected by a network A loose collection of file that is limited to one location. A loose collection of file that is spread to multiple locations and is interconnected by a network A single logical database that is limited to one location. A single logical database 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 The semijoin approach saves network traffic. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Which of the following is a disadvantage of replication? 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. 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. ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Data replication is favored where most process requests are read-only and where the data are relatively static. False True False True ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS