Exam 12: Distributed Database Management Systems

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fragmentation refers to the division of a relation into attribute subsets.

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transparency allows the integration of several different local database management systems (DBMS) under a common, or global, schema.

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Distributed data access was needed to support geographically dispersed business units.

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A lets a single SQL statement access the data that are to be processed by a single remote database processor.

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In a basic distributed processing environment, the distributed processing system shares the database chores among three sites connected through a .

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A centralized database management is subject to a problem such as .

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is the delay imposed by the amount of time required for a data packet to make a round trip from point A to point B.

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The objective of optimization is to minimize the total cost associated with the execution of a request.

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A transaction processor (TP) is the software component residing on each computer that stores and retrieves data located at the site.

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The distributed database system must be of the computer hardware system.

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_____ distributed database management system (DDBMS) integrate multiple instances of the same DBMS over a network.

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A database management system needs to prepare the data for presentation to the end user or to an application program.

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In theory, a(n) can be an independent centralized database management system with proper interfaces to support remote access from other independent database management systems in the network.

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One of the advantages of a distributed database management system (DDBMS) is operating cost.

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A distributed database management system (DDBMS) must be communications-media-dependent.

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fragmentation allows a user to break a single object into two or more segments, or fragments.

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Distributed processing does not require:

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In order to manage distributed data, copies or parts of the database processing functions must be distributed to all data storage sites.

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In a distributed database management system (DDBMS), query is used to find the best access strategy.

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Which of the following is an advantage associated with a distributed database management system (DDBMS)?

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