Database Management Systems Mcqs

Page No. 93

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


aNetwork database


bRelational database


cDistributed database


dHierarchical database


View Answer Network database

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


adividing documents to be entered into batches


bcontrolling the input of each input clerk


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


dNone of the above



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


adifficult to update


black of data independence


cdata redundancy & program dependence


dAll of the above


View Answer All of the above

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


aALTER INDEX


bREDEFINE INDEX


cMODIFY INDEX


dDO INDEX


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


bHierarchical


cRelational


dObject-Oriented


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


bOne-to-many relationship


cMany-to-one relationship


dMany-to-many relationship



When performing a look-up operation using a form


ayou enter the search value into the form


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


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


dAll of the above



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


aADD USER TO DATABASE


bMK USER


cCREATE USER


dNone of the above


View Answer CREATE USER

In the DBM approach, application programs perform the


astorage function


bprocessing functions


caccess control


dAll of the above


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


bRecords


cFields


dDatabase


View Answer Fields

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