Database Processing For BIS MCQ

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• Data Mining uses simple arithmetic techniques such as sums, averages, and groupings to perform what-if analyses, to make predictions, and to facilitate decision making.
  ক

  True

  খ

  False
• Which of the following is not a reason that operational data are difficult to read?
  ক

  Non-duplicated data

  খ

  Dirty data

  গ

  Missing values

  ঘ

  Non-integrated data
• Which of the following is an unsupervised data mining technique?
  ক

  Cluster analysis only

  খ

  Regression Analysis only

  গ

  RFM Analysis only

  ঘ

  Both Regression Analysis and RFM Analysis
• Data mining applications are used accomplish which of the following tasks?
  ক

  Process transactions only

  খ

  Do RFM analysis only

  গ

  Do what-if analysis only

  ঘ

  Do both RFM and what-if analysis
• The reports generated by a reporting system are usually not delivered in which of the following media?
  ক

  Web portal

  খ

  Commercial courier service

  গ

  Digital dashboard

  ঘ

  E-Mail
• Business Intelligence (BI) systems do not obtain their data by which of the following means?
  ক

  Read and process data from an operational database

  খ

  Process transactions

  গ

  Process extracts from operational databases

  ঘ

  Process data purchased from data vendors
• Which of the following are not done by Business Intelligence (BI) systems?
  ক

  Analyze past and current activities only

  খ

  Process and record transactions only

  গ

  Both of the above are correct.

  ঘ

  Neither of the above is correct.