SampleTest1-ids521

SampleTest1-ids521 - IDS 521 Sample Questions for Test I 1....

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IDS 521 Sample Questions for Test I 1. An attribute that uniquely identifies an entity, and consists of a composite attribute is called a(n) a. Identifying attribute. b. Composite attribute. c. Relationship identifier. d. Composite identifier . e. Foreign key. 2. Subtypes should be used when ___ a. There are attributes that apply to some, but not all instances of an entity type. b. Supertypes relate to objects outside the business. c. The instances of a subtype participate in a relationship that unique to that subtype. d. A and B. e. A and C . 3. A relation that contains minimal redundancy and allows easy use is considered to be _______ a. Well-structured b. Simple c. Well-maintained d. Clean e. None of the above 4. The number of entity types that participate in a relationship is called the _____ of that relationship. a. Identifying characteristics b. Counter c. Number d. Degree e. Cardinality 5. Functional dependency is a constraint between two sets of attributes. A determinant is the attribute on the left-hand side of the arrow in a functional dependency. A determinant could be: a. A multi-valued attribute.
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This note was uploaded on 11/01/2011 for the course IDS 521 taught by Professor Staff during the Spring '08 term at Ill. Chicago.

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SampleTest1-ids521 - IDS 521 Sample Questions for Test I 1....

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