Introduction to Database System The activity of a file is a low percentages of number of records added or deleted from a file is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files 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 is a measure of the percentage of existing records updated during a run if high, reduces processing efficiency for sequential and nonsequential files refers to how closely the files fits into the allocated None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select only one copy of each set of duplicable rows All of these None of these SELECT UNIQUE SELECT DIFFERENT SELECT DISTINCT All of these None of these SELECT UNIQUE SELECT DIFFERENT SELECT DISTINCT ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Sophisticated report generators can selectively retrieve and print portions of a list perform arithmetic operations All of the listed here print row-oriented reports selectively retrieve and print portions of a list perform arithmetic operations All of the listed here print row-oriented reports ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is a group of one or more attributes that uniquely identifies a row? Key Determinant Relation Tuple Key Determinant Relation Tuple ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The master list of an indexed file has a number assigned to each record contains only a list of keys and record numbers is sorted in ascending order both (b) and (c) None of these has a number assigned to each record contains only a list of keys and record numbers is sorted in ascending order both (b) and (c) None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If a calculation is embedded in a form the result of the calculations are printed in report the result of the calculations are stored with the form all of the listed here the calculations are stored with the form the result of the calculations are printed in report the result of the calculations are stored with the form all of the listed here the calculations are stored with the form ANSWER DOWNLOAD EXAMIANS APP
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