DBMS-Data Warehousing and Data Mining Questions and Answers

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Q31
Data mart is a data store which is
  • A a specialised and subject-oriented.
  • B integrated and time-variant.
  • C volatile data store.
  • D All of these
Answer: Option D
Q32
A data mart may contain
  • A summarised data.
  • B de-normalised data.
  • C aggregated departmental data.
  • D All of these.
Answer: Option D
Q33
Online analytical processing (OLAP) is an advanced data analysis environment that supports
  • A decision making
  • B business modelling.
  • C operations research activities.
  • D All of these
Answer: Option D
Q34
OLAP is
  • A a dynamic synthesis of multidimentional data.
  • B a analysis of multidimentional data.
  • C a consolidation of large volumes of multi-dimensional data.
  • D All of these
Answer: Option D
Q35
Data mining is
  • A the process of extracting valid, previously unknown comprehensible and actionable information from large databases and using it to make crucial business decisions.
  • B a tool that allows end-users direct access and manipulation of data from within data-warehousing environment without the intervention of customised programming activity.
  • C a tool that helps end users extract useful business information from large databases.
  • D All of these.
Answer: Option D
Q36
The expanded from of KDD is
  • A Knowledge Discovery in Database
  • B Knowledge of decision making in Databases.
  • C Knowledge-based Decision Data.
  • D Karnough Decision Database
Answer: Option A
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