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  • Question
  • A distributed database is which of the following?


  • Options
  • A. A single logical database that is spread to multiple locations and is interconnected by a network
  • B. A loose collection of file that is spread to multiple locations and is interconnected by a network
  • C. A single logical database that is limited to one location.
  • D. A loose collection of file that is limited to one location.

  • Correct Answer
  • A single logical database that is spread to multiple locations and is interconnected by a network 


  • Distributed Databases problems


    Search Results


    • 1. A transaction manager is which of the following?

    • Options
    • A. Maintains a log of transactions
    • B. Maintains before and after database images
    • C. Maintains appropriate concurrency control
    • D. All of the above.
    • Discuss
    • 2. An autonomous homogenous environment is which of the following?

    • Options
    • A. The same DBMS is at each node and each DBMS works independently.
    • B. The same DBMS is at each node and a central DBMS coordinates database access.
    • C. A different DBMS is at each node and each DBMS works independently.
    • D. A different DBMS is at each node and a central DBMS coordinates database access.
    • Discuss
    • 3. A multifield transformation does which of the following?

    • Options
    • A. Converts data from one field into multiple fields
    • B. Converts data from multiple fields into one field
    • C. Converts data from multiple fields into multiple fields
    • D. All of the above
    • Discuss
    • 4. The load and index is which of the following?

    • Options
    • A. A process to reject data from the data warehouse and to create the necessary indexes
    • B. A process to load the data in the data warehouse and to create the necessary indexes
    • C. A process to upgrade the quality of data after it is moved into a data warehouse
    • D. A process to upgrade the quality of data before it is moved into a data warehouse
    • Discuss
    • 5. Reconciled data is which of the following?

    • Options
    • A. Data stored in the various operational systems throughout the organization.
    • B. Current data intended to be the single source for all decision support systems.
    • C. Data stored in one operational system in the organization.
    • D. Data that has been selected and formatted for end-user support applications.
    • Discuss
    • 6. Replication should be used when which of the following exist?

    • Options
    • A. When transmission speeds and capacity in a network prohibit frequent refreshing of large tables.
    • B. When using many nodes with different operating systems and DBMSs and database designs.
    • C. The application's data can be somewhat out-of-date.
    • D. All of the above.
    • Discuss
    • 7. Which of the following is a disadvantage of replication?

    • Options
    • A. Reduced network traffic
    • B. If the database fails at one site, a copy can be located at another site.
    • C. Each site must have the same storage capacity.
    • D. Each transaction may proceed without coordination across the network.
    • Discuss
    • 8. A homogenous distributed database is which of the following?

    • Options
    • A. The same DBMS is used at each location and data are not distributed across all nodes.
    • B. The same DBMS is used at each location and data are distributed across all nodes.
    • C. A different DBMS is used at each location and data are not distributed across all nodes.
    • D. A different DBMS is used at each location and data are distributed across all nodes.
    • Discuss
    • 9. Some of the columns of a relation are at different sites is which of the following?

    • Options
    • A. Data Replication
    • B. Horizontal Partitioning
    • C. Vertical Partitioning
    • D. Horizontal and Vertical Partitioning
    • Discuss
    • 10. Location transparency allows for which of the following?

    • Options
    • A. Users to treat the data as if it is at one location
    • B. Programmers to treat the data as if it is at one location
    • C. Managers to treat the data as if it is at one location
    • D. All of the above.
    • Discuss


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