Introduction to Database System Periodically adding, changing and deleting file records is called file upgrading Updating restructuring renewing upgrading Updating restructuring renewing ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The data dictionary tells the DBMS what these files contain what attribute are possessed by the data what files are in the database All of the listed here what these files contain what attribute are possessed by the data what files are in the database All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity? Subtype entity Instance entity Archetype entity Supertype entity Subtype entity Instance entity Archetype entity Supertype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A good query system can be accessed only by data processing professionals allows non-programmers to access information stored in a database both (a) and (b) can accept English language commands None of these can be accessed only by data processing professionals allows non-programmers to access information stored in a database both (a) and (b) can accept English language commands None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A compound key is made up a several pieces of information is a combination of each unique key uniquely identifies an item in a list None of these both (a) and (b) is made up a several pieces of information is a combination of each unique key uniquely identifies an item in a list None of these both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An audit trail 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 is the recorded history of operations performed on a file can be used to restore lost information All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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