Database Management Systems Mcqs

Page No. 99

The PROJECT command will create new table that has


amore fields than the original table


bmore rows than the original table


call the fields of master table


dNone of the above


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


bprinter


chigh speed, large-capacity disk


dplotter



A database management system


aallows simultaneous access to multiple files


bcan do more than a record management system


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


dboth (a) and (b)


View Answer both (a) and (b)

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


aHierarchical schema


bNetwork schema


cRelational schema


dAll of the above


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


bGraphics media


cMultimedia


dHypertext


View Answer Multimedia

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


aonly one owner but many owner occurrences


bonly one member but many member occurrence


cmore than one member but only one occurrence per member


dAll of the above



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


aDELETE INDEX


bDROP INDEX


cREMOVE INDEX


dROLL BACK INDEX


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


bCharacters


cData field


dSchema


View Answer Data field

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


arecord


bfield


cfile


ddata base


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


bchange the name of a field


cchange the width of a field


dAll of the above



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