Database Management Systems Mcqs

Page No. 93

The model for a _____ resembles the hierarchical model in many respects.


aNetwork database

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bRelational database

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cDistributed database

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dHierarchical database

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View Answer Network database

With respect to data input, the most accurate description of batch control is


adividing documents to be entered into batches

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bcontrolling the input of each input clerk

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ccomparing to a pre-calculated figure the total of a data item summed across a batch records put into the system

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dNone of the above

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Which of the following is a serious problem of file management systems?


adifficult to update

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black of data independence

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cdata redundancy & program dependence

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dAll of the above

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View Answer All of the above

In SQL, which command(s) is(are) used to redefine an index's future storage allocation


aALTER INDEX

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bREDEFINE INDEX

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cMODIFY INDEX

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dDO INDEX

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View Answer ALTER INDEX

A _____ database does not use pointers or physical links, but instead finds related records by examining the contents of fields.


aNetwork

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bHierarchical

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cRelational

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dObject-Oriented

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View Answer Relational

A _____ means that one record in a particular record type is related to only one record of another record type.


aOne-to-one relationship

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bOne-to-many relationship

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cMany-to-one relationship

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dMany-to-many relationship

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When performing a look-up operation using a form


ayou enter the search value into the form

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byou look at each form sequentially until you see the one you want

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cyou type the key in an entry line, and the correct form is displayed

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dAll of the above

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In SQL, which command is used to create a database user?


aADD USER TO DATABASE

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bMK USER

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cCREATE USER

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dNone of the above

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View Answer CREATE USER

In the DBM approach, application programs perform the


astorage function

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bprocessing functions

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caccess control

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dAll of the above

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View Answer processing functions

A ____ Contains the smallest unit of meaningful data, so you might call it the basic building block for a data file.


aFile structure

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bRecords

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cFields

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dDatabase

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View Answer Fields

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