DBMS-Distributed Database Systems

DBMS-Distributed Database Systems
41. Data allocation is a
  • technique of breaking up the database into logical units, which may be assigned for storage at the various sites
  • process of deciding about locating (or placing) data to several sites.
  • technique that permits storage of certain data in more than one site.
  • None of these.
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42. Data rreplication is a
  • Technique of breaking up the database into logical units, which may be assigned for storage at the various sites.
  • process of deciding about locating (or placing) data to severall sites.
  • technique that permits storage of certain data in more than one site.
  • None of these
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43. Which of the following refers to the operation of copying and maintaining database objects in multiple database belonging to a distributed system ?
  • Replication
  • Backup
  • Recovery
  • None of these
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44. In distributed query processing, semijoin operation is used to
  • reduce the size of a relation that needs to be transmitted.
  • reduce the communication costs.
  • Both (a) and (b)
  • None of these
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45. Which of the following is the function of a distibutted DBMS ?
  • Distributed data recovery
  • Distributed query processing
  • Replicated data management
  • All of these
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46. DSS helps in the analysis of business information.
  • TRUE
  • FALSE
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47. Discuss the evolution of decision support system.
  • TRUE
  • FALSE
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48. MDS and MIS were later on commonly known as DSS.
  • TRUE
  • FALSE
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49. DSS is an interactive, flexible and adaptable CBIS
  • TRUE
  • FALSE
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