Distributed Databases Location transparency allows for which of the following? Managers to treat the data as if it is at one location Programmers to treat the data as if it is at one location Users 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 Programmers to treat the data as if it is at one location Users to treat the data as if it is at one location All of these ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Which of the following is not one of the stages in the evolution of distributed DBMS? Distributed request Distributed unit of Work Unit of work Remote unit of work Distributed request Distributed unit of Work Unit of work Remote unit of work ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A transaction manager is which of the following? Maintains appropriate concurrency control All of these Maintains before and after database images Maintains a log of transactions Maintains appropriate concurrency control All of these Maintains before and after database images Maintains a log of transactions ANSWER DOWNLOAD EXAMIANS APP
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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Which of the following is a disadvantage of replication? Reduced network traffic Each site must have the same storage capacity. If the database fails at one site, a copy can be located at another site. Each transaction may proceed without coordination across the network. Reduced network traffic Each site must have the same storage capacity. If the database fails at one site, a copy can be located at another site. Each transaction may proceed without coordination across the network. ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Databases that are stored on computers at multiple locations and are not interconnected by a network are known as distributed databases. False True False True ANSWER DOWNLOAD EXAMIANS APP
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