Introduction to Database System An on-line commercial site such as Amazon.com is an example of a(n) ________ . single-user database application e-commerce database application multiuser database application data mining database application single-user database application e-commerce database application multiuser database application data mining database application ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A _____ database does not use pointers or physical links, but instead finds related records by examining the contents of fields. Network Hierarchical Object-Oriented Relational None of these Network Hierarchical Object-Oriented Relational None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relational schema, each tuple is divided into fields called All of the listed here Queries Domains Relations All of the listed here Queries Domains Relations ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A compound key both (a) and (b) None of these uniquely identifies an item in a list is made up a several pieces of information is a combination of each unique key both (a) and (b) None of these uniquely identifies an item in a list is made up a several pieces of information is a combination of each unique key ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes records and files None of these data elements record relationships All of these records and files None of these data elements record relationships All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file None of these is a low percentages of number of records added or deleted from a file refers to how closely the files fits into the allocated is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files None of these is a low percentages of number of records added or deleted from a file refers to how closely the files fits into the allocated is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files ANSWER DOWNLOAD EXAMIANS APP
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