Data scrubbing is which of the following?

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

Correct Answer: A process to upgrade the quality of data before it is moved into a data warehouse

Bissoy MCQ
#Database #Data Warehousing

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During logical database design, the conceptual data model is transformed into a logical data model which describes the data in terms of a specific data management technology.
A True
B False
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A compatibility of data
B transmission of data
C desirability of data
D up-to-date data
E None of the above
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A dataFormatAs
B datafld
C disabled
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Which of the following is the attribute that indicates the name of the data source object that supplies the data that is bound to this element?
A dataFormatAs
B datafld
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A All plant species
B All animal species
C All endangered species
D All extinct species
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A By direct personal interviews
B By indirect personal interviews
C By schedules sent through enumerators
D From published thesis
Which of the following is an integrated collection of data with minimum redundancy, so that different applications can use the required data.
A records
B file
C DBMS
D schema
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A Telescopes and data bases complement each other for the astronomer
B Telescopes and data bases are both becoming relevant for the astronomer
C Telescopes and data bases have nothing in common for the astronomer
D Telescopes and data bases can be confusing to the astronomer
Read the following passage and answer questions. On the face of it, telescopes and data bases sound like very different things. Telescopes sit on the top of mountains, and are pointed at the skies; data bases sit on computer hard disks, humming away and
A The contemporary astronomer needs to look at the sky from a mountain top.
B The contemporary astronomer needs a telescope to explore the universe.
C The contemporary astronomer needs heavy machinery to explore the universe.
D The contemporary astronomer needs a telescope equipped with digital sensors to explore the universe.
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A D/A converter
B A/D converter
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