Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: B → A → (B,C) → C → B → A → (B,C) → C → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Periodically adding, changing and deleting file records is called file renewing restructuring Updating upgrading renewing restructuring Updating upgrading ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System With respect to data input, the most accurate description of batch control is controlling the input of each input clerk dividing documents to be entered into batches All of these None of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system controlling the input of each input clerk dividing documents to be entered into batches All of these None of these comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Composite identifiers consist of two or more attributes. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If the record management system allows you to edit values before they are recorded on disk, you can change the width of a field correct spelling changes before they are recorded All of the listed here change the name of a field change the width of a field correct spelling changes before they are recorded All of the listed here change the name of a field ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity represents an actual occurrence of an associated generalized entity? Instance entity Archetype entity Supertype entity Subtype entity Instance entity Archetype entity Supertype entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
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