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Data Mining and Data Warehouse MCQs | Page - 27

Dear candidates you will find MCQ questions of Data Mining and Data Warehouse here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.17K Points
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Q. 261) Which one manages both current and historic transactions?

(A) oltp
(B) olap
(C) spread sheet
(D) xml
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Mr. Dubey • 51.17K Points
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Q. 262) Expansion for DSS in DW is__________.

(A) decision support system
(B) decision single system
(C) data storable system
(D) data support system
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Mr. Dubey • 51.17K Points
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Q. 263) __________describes the data contained in the data warehouse

(A) relational data
(B) operational data
(C) meta data
(D) informational data
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Mr. Dubey • 51.17K Points
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Q. 264) Converting data from different sources into a common format for processing is called as________.

(A) selection.
(B) preprocessing
(C) transformation
(D) interpretation
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Mr. Dubey • 51.17K Points
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Q. 265) Data warehousing is used in_______________

(A) transaction system
(B) database management system
(C) decision support system
(D) expert system
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Mr. Dubey • 51.17K Points
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Q. 266) Data warehouse is based on_____________

(A) two dimensional model
(B) three dimensional model
(C) multi dimensional model
(D) unidimensional model
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Mr. Dubey • 51.17K Points
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Q. 267) Multidimensional model of data warehouse called as_____

(A) data structure
(B) table
(C) tree
(D) data cube
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Mr. Dubey • 51.17K Points
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Q. 268) In data warehousing what is time-variant data?

(A) data in the warehouse is only accurate and valid at some point in time or over time interval
(B) data in the warehouse is always accurate and valid
(C) data in the warehouse is not accurate
(D) data in the warehouse is only accurate sometimes
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Mr. Dubey • 51.17K Points
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Q. 269) What is a Star Schema?

(A) a star schema consists of a fact table with a single table for each dimension
(B) a star schema is a type of database system
(C) a star schema is used when exporting data from the database
(D) none of these
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Mr. Dubey • 51.17K Points
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Q. 270) What does the acronym ETL stands for?

(A) explain,transfer and lead
(B) extract,transform and load
(C) extract,transfer and load
(D) effect,transfer and load
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