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Title: An attribute that uniquely identifies an entity and consists of a composite attribute is called ... Post by: fokkdsn on Mar 15, 2018 An attribute that uniquely identifies an entity and consists of a composite attribute is called a(n):
A) composite attribute. B) composite identifier. C) identifying attribute. D) relationship identifier. Q. 2 The three-schema approach includes which of the following schemas? A) Internal B) Logical C) Cross-functional D) Dissecting Q. 3 Which of the following is NOT a reason to create an instance of a relational schema with sample data? A) Sample data can be used to improve user communications. B) Sample data can be used for prototype generation. C) Sample data can reverse database implementation errors. D) Sample data provide a convenient way to check the accuracy of your design. Q. 4 Which of the following criteria should be considered when selecting an identifier? A) Choose an identifier that is stable. B) Choose an identifier that will not be null. C) Choose an identifier that doesn't have large composite attributes. D) All of the above. Q. 5 One of the most popular RAD methods is: A) automated design. B) structured walkthrough. C) prototyping. D) crafting. Q. 6 In the figure below, the primary key for Order Line is which type of key? A) Composite B) Foreign C) Standard D) Grouped Q. 7 The total quiz points for a student for an entire semester is a(n) ________ attribute. A) derived B) mixed C) stored D) addressed Q. 8 Which of the following are properties of relations? A) Each attribute has a unique name. B) No two rows in a relation are identical. C) There are no multivalued attributes in a relation. D) All of the above. Title: An attribute that uniquely identifies an entity and consists of a composite attribute is called ... Post by: kali on Mar 15, 2018 B A C D C A A D Title: An attribute that uniquely identifies an entity and consists of a composite attribute is called ... Post by: fokkdsn on Mar 15, 2018 All correct!
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