Introduction to Database System When performing a look-up operation using a form you type the key in an entry line, and the correct form is displayed None of these All of these you enter the search value into the form you look at each form sequentially until you see the one you want you type the key in an entry line, and the correct form is displayed None of these All of these you enter the search value into the form you look at each form sequentially until you see the one you want ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An audit trail is the recorded history of operations performed on a file can be used to restore lost information All of the listed here is used to make back-up copies is the recorded history of operations performed on a file can be used to restore lost information All of the listed here is used to make back-up copies ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The activity of a file None of these refers to how closely the files fits into the allocated 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 None of these refers to how closely the files fits into the allocated 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 ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A functional dependency is a relationship between or among: attributes. tables. rows. relations. attributes. tables. rows. relations. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if they have a row in common None of these they have no records with the same value in the common field both (b) and (c) they have a field in common they have a row in common None of these they have no records with the same value in the common field both (b) and (c) they have a field in common ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A logical schema All of these None of these describes how data is actually stored on disk is a standard way of organizing information into accessible parts is the entire database All of these None of these describes how data is actually stored on disk is a standard way of organizing information into accessible parts is the entire database ANSWER DOWNLOAD EXAMIANS APP
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