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Exam 12: Distributed Database Management Systems

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Question 41

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Describe performance transparency and heterogeneity transparency.

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Performance transparency allows the syst...

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Question 42

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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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Question 43

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A DDBMS is subject to which restriction?

The _____ scenario is typical of most mainframe and midrange UNIX/LINUX server database management systems (DBMS).

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

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

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

A distributed database management system (DDBMS) governs the storage and processing of logically related data over interconnected computer systems.

In a distributed database management system (DDBMS), _____ occurs to determine the data location of local and remote fragments.

Distribution transparency is supported by a distributed data dictionary.

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

Current distributed database management system (DDBMS) are subject to some problems, such as the complexity of management and control.

_____ transparency allows data to be updated simultaneously at several network sites.

During_____ data allocation, the database is divided into two or more disjointed parts (fragments) and stored at two or more sites.