Introduction to Database System A compound key uniquely identifies an item in a list is made up a several pieces of information both (a) and (b) None of these is a combination of each unique key uniquely identifies an item in a list is made up a several pieces of information both (a) and (b) None of these is a combination of each unique key ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): relationship. attribute. entity. identifier. relationship. attribute. entity. identifier. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An identifier typically uses more than one attribute. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database design may be based on existing data. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM? dBase-II IDMS R:base DB2 dBase-II IDMS R:base DB2 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. instance child subtype parent instance child subtype parent ANSWER DOWNLOAD EXAMIANS APP
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