Distributed Databases Which of the following is a disadvantage of replication? 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 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. ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Location transparency allows for which of the following? Programmers to treat the data as if it is at one location All of these Managers to treat the data as if it is at one location Users to treat the data as if it is at one location Programmers to treat the data as if it is at one location All of these Managers to treat the data as if it is at one location Users to treat the data as if it is at one location ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases The purpose of timestamping is to avoid the use of locks. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A transaction manager is which of the following? Maintains appropriate concurrency control All of these Maintains a log of transactions Maintains before and after database images Maintains appropriate concurrency control All of these Maintains a log of transactions Maintains before and after database images ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Data replication is favored where most process requests are read-only and where the data are relatively static. True False True False ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases The problem of concurrency control is more complex in a distributed database. True False True False ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS