Exam 12: Distributed Database Management Systems

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Distributed processing does not require a distributed database,and a distributed database does not require distributed processing.

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The __________________________________________________ scenario is typical of most mainframe and midrange server computer DBMSs.

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____ fragmentation allows you to break a single object into two or more segments or fragments.

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A ____ distributed database system will support different DBMSs that may even support different models running under different computer systems.

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A distributed ____ allows a transaction to reference several different remote database processing sites.

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

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Distributed database systems do not require complex mechanisms to manage transactions and ensure the database's consistency and integrity.

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____ query optimization takes place at compilation time.

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The TP is the software component found in each computer that requests data.

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The ____ processor is the software component found in each computer that requests data.It receives and processes the application's data requests.

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One of the advantages of a DDBMS is security.

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One of the advantages of a DDBMS is improved communication.

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____ transparency allows the integration of several different local DBMSs under a common,or global,schema.

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____________________ management ensures that data move from one consistent state to another,including synchronization of local and remote transactions.

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____ query optimization takes place at execution time.

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One of the advantages of a DDBMS is processor ____________________.

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The ____ scenario describes a fully distributed DBMS with support for multiple data processors and transaction processors at multiple sites.

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Distributed processing shares the database's logical processing among two or more physically independent sites that are connected through a network.

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The inherently complex distributed data environment increases the urgency for standard protocols governing transaction management.

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____ transparency exists when the end user or programmer must specify both the fragment names and their locations.

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