Introduction to Database System The activity of a file refers to how closely the files fits into the allocated if high, reduces processing efficiency for sequential and nonsequential files 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 None of these refers to how closely the files fits into the allocated if high, reduces processing efficiency for sequential and nonsequential files 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 None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Data items grouped together for storage purposes are called a title record None of these list string title record None of these list string ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity. parent subtype child instance parent subtype child instance ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The files stored on a secondary stage device are composed of a hierarchy of data. What does a record in a file contain? Bits None of the listed here Data field Characters Bits None of the listed here Data field Characters ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, the CREATE TABLE is used All of these to change a table's storage characteristics to create a table, defining its columns, integrity constrains, and storage allocation to add a column/integrity constraint to a table to redefine a column All of these to change a table's storage characteristics to create a table, defining its columns, integrity constrains, and storage allocation to add a column/integrity constraint to a table to redefine a column ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The functional dependency R → S means that the value of S can be determined when we are given a value of R. False True False True ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS