Database Management Systems Mcqs

Page No. 99

The PROJECT command will create new table that has


amore fields than the original table

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bmore rows than the original table

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call the fields of master table

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dNone of the above

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View Answer None of the above

Which of the following hardware components is the most important to the operation of a database management system?


ahigh-resolution video display

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bprinter

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chigh speed, large-capacity disk

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dplotter

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A database management system


aallows simultaneous access to multiple files

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bcan do more than a record management system

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cis a collection of programs for managing data in a single file

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dboth (a) and (b)

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View Answer both (a) and (b)

A top-to-bottom relationship among the items in a database is established by a


aHierarchical schema

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bNetwork schema

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cRelational schema

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dAll of the above

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View Answer Hierarchical schema

What is the name given to the database management system which is able to handle full text data, image data, audio and video?


aFull media

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bGraphics media

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cMultimedia

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dHypertext

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View Answer Multimedia

An-owner-member set in the CODASYL specifications may have


aonly one owner but many owner occurrences

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bonly one member but many member occurrence

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cmore than one member but only one occurrence per member

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dAll of the above

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Which command is used to remove an index from the database in SQL?


aDELETE INDEX

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bDROP INDEX

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cREMOVE INDEX

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dROLL BACK INDEX

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View Answer DROP INDEX

The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain?


aBits

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bCharacters

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cData field

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dSchema

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View Answer Data field

The relational model uses some unfamiliar terminology. A tuple is equivalent to a:


arecord

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bfield

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cfile

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ddata base

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View Answer record

If the record management system allows you to edit values before they are recorded on disk, you can


acorrect spelling changes before they are recorded

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bchange the name of a field

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cchange the width of a field

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dAll of the above

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