Distributed Database Management System , computer science homework help

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Distributed Database Management System , computer science homework help

  • 1.Describe the evolution from centralized DBMSs to distributed DBMSs.
  • 2.List and discuss some of the factors that influenced the evolution of the DDBMS.
  • 3.What are the advantages of the DDBMS?
  • 4.What are the disadvantages of the DDBMS?
  • 5.Explain the difference between distributed database and distributed processing.
  • 6.What is a fully distributed database management system?
  • 7.What are the components of a DDBMS?
  • 8.List and explain the transparency features of a DDBMS.
  • 9.Define and explain the different types of distribution transparency.

10. Describe the different types of database requests and transactions.

  • 11.Explain the need for the two-phase commit protocol. Then describe the two phases.
  • 12.What is the objective of the query optimization functions?
  • 13.To which transparency feature are the query optimization functions related?
  • 14.What issues should be considered when resolving data requests in a distributed environment?
  • 15.Describe the three data fragmentation strategies. Give some examples of each.
  • 16.What is data replication, and what are the three replication strategies?
  • 17.What are the two basic styles of data replication?
  • 18.What trade-offs are involved in building highly distributed data environments?
  • 19.How does a BASE system differ from a traditional distributed database system?
  • 20.Briefly describe the process of writing a file in Hadoop Distributed File System(HDFS)?
  • 21.Define the term heartbeat in an HDFS and explain its purpose?

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