Exam 12: Distributed Database Management Systems
Exam 1: Database Systems72 Questions
Exam 2: Data Models75 Questions
Exam 3: The Relational Database Model74 Questions
Exam 4: Entity Relationship Ermodeling75 Questions
Exam 5: Advanced Data Modeling83 Questions
Exam 6: Normalization of Database Tables92 Questions
Exam 7: Introduction to Structured Query Language SQL92 Questions
Exam 8: Advanced SQL95 Questions
Exam 9: Database Design87 Questions
Exam 10: Transaction Management and Concurrency Control76 Questions
Exam 11: Database Performance Tuning and Query Optimization82 Questions
Exam 12: Distributed Database Management Systems72 Questions
Exam 13: Business Intelligence and Data Warehouses75 Questions
Exam 14: Big Data Analytics and NoSQL76 Questions
Exam 15: Database Connectivity and Web Technologies81 Questions
Exam 16: Database Administration and Security81 Questions
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A request lets a single SQL statement reference data located at several different local or remote DP sites.
(Multiple Choice)
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A distributed can reference several different local or remote data processing sites.
(Multiple Choice)
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Rapid ad hoc data became unnecessary in the quick-response decision-making environment.
(True/False)
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A distributed database management system (DDBMS)governs the storage and processing of logically related data over interconnected computer systems.
(True/False)
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_____ distributed database management system (DDBMS)integrate multiple instances of the same DBMS over a network.
(Multiple Choice)
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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.
(True/False)
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The scenario is typical of most mainframe and midrange UNIX/LINUX server database management systems (DBMS)
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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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A fully distributed database management system (DBMS)must perform all the functions of a centralized DBMS,and it must handle all necessary functions imposed by the distribution of data and processing.
(True/False)
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The database description,known as the distributed schema,is the common database schema used by local transaction processors (TPs)to translate user requests into subqueries that will be processed by different data processors (DPs).
(Short Answer)
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Distribution transparency is supported by a distributed data dictionary.
(True/False)
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One of the advantages of a distributed database management system (DDBMS)is security.
(True/False)
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The rule requires that all copies of data fragments be identical.
(Multiple Choice)
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One of the advantages of a distributed database management system (DDBMS)is operating cost.
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transparency allows a physically dispersed database to be managed as though it were centralized.
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One of the advantages of a distributed database management system (DDBMS)is growth facilitation.
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fragmentation refers to the division of a relation into attribute subsets.
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transparency is the highest level of transparency.The end user or programmer does not need to know that a database is partitioned.
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transparency allows data to be updated simultaneously at several network sites.
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