Introduction to Database System What is the language used by most of the DBMSs for helping their users to access data? SQL High level language Query language 4GL SQL High level language Query language 4GL ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A ____ Contains the smallest unit of meaningful data, so you might call it the basic building block for a data file. File structure Fields Records Database File structure Fields Records Database 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? Instance entity Archetype entity Supertype entity Subtype entity Instance entity Archetype entity Supertype entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A large computer information system maintains many different computer files. Which amongst them is called a perpetual file? Specialized file Update file Log file Master file Specialized file Update file Log file Master file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A list consists of last names, first names, addresses, and pin codes if all people in the list have the same last and the same pin code, a useful key would be the pin code the last name All of these a compound key consisting of the first name and the last name None of these the pin code the last name All of these a compound key consisting of the first name and the last name None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System One solution to the multivalued dependency constraint problem is to: create a new theme. add a composite key. split the relation into two relations, each with a single theme. change the theme. create a new theme. add a composite key. split the relation into two relations, each with a single theme. change the theme. ANSWER DOWNLOAD EXAMIANS APP
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