Introduction to Database System The primary key is selected from the: foreign keys. candidate keys. composite keys. determinants. foreign keys. candidate keys. composite keys. determinants. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Entities use identifiers while tables use keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file is a measure of the percentage of existing records updated during a run refers to how closely the files fits into the allocated None of these is a low percentages of number of records added or deleted from a file if high, reduces processing efficiency for sequential and nonsequential files is a measure of the percentage of existing records updated during a run refers to how closely the files fits into the allocated None of these is a low percentages of number of records added or deleted from a file if high, reduces processing efficiency for sequential and nonsequential files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The data-base environment has all of the following components except: users None of these data base data-base administrator separate files users None of these data base data-base administrator separate files ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command(s) is(are) used to redefine an index's future storage allocation ALTER INDEX DO INDEX MODIFY INDEX None of these REDEFINE INDEX ALTER INDEX DO INDEX MODIFY INDEX None of these REDEFINE INDEX ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An entity is something that can be identified in the user's work environment; something that the users want to track. True False True False ANSWER DOWNLOAD EXAMIANS APP
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