Distributed Databases Which of the following is not one of the stages in the evolution of distributed DBMS? Distributed request Distributed unit of Work Remote unit of work Unit of work Distributed request Distributed unit of Work Remote unit of work Unit of work 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 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 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 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 loose collection of file that is limited to one location. ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases Location transparency allows for which of the following? All of these Users to treat the data as if it is at one location Managers 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 Users to treat the data as if it is at one location Managers to treat the data as if it is at one location Programmers to treat the data as if it is at one location ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases In a semijoin, only the joining attribute is sent from one site to another, and then only the required rows are returned. False True False True 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. False True False True ANSWER DOWNLOAD EXAMIANS APP
Distributed Databases A transaction manager is which of the following? Maintains a log of transactions Maintains before and after database images All of these Maintains appropriate concurrency control Maintains a log of transactions Maintains before and after database images All of these Maintains appropriate concurrency control ANSWER DOWNLOAD EXAMIANS APP
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