Exam 13: Object-Oriented Data Modeling
Exam 1: The Database Environment and Development Process173 Questions
Exam 2: Modeling Data in the Organization121 Questions
Exam 3: The Enhanced E-R Model and Business Rules74 Questions
Exam 4: Logical Database Design and the Relational Model120 Questions
Exam 5: Physical Database Design and Performance105 Questions
Exam 6: Introduction to SQL119 Questions
Exam 7: Advanced SQL111 Questions
Exam 8: Database Application Development100 Questions
Exam 9: Data Warehousing117 Questions
Exam 10: Data Quality and Integration102 Questions
Exam 11: Data and Database Administration116 Questions
Exam 12: Distributed Databases109 Questions
Exam 13: Object-Oriented Data Modeling91 Questions
Exam 14: Using Relational Databases to Provide Object Persistence113 Questions
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A composition is an instance of class that is made up of more than one class.
(True/False)
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A(n)________ defines the form or protocol of an operation,but not its implementation.
(Multiple Choice)
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What is the difference between an abstract class and a concrete class?
(Essay)
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An abstract operation describes the implementation of an operation.
(True/False)
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When an object is an instance of more than one class,this is known as ________.
(Short Answer)
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When an operation may apply to two or more classes in different ways,this is known as ________.
(Short Answer)
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A diagram that shows the static structure of an object-oriented model is called a(n):
(Multiple Choice)
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An aggregation expresses a part-of relationship between a component object and an aggregate object.
(True/False)
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If a subclass of a company inherits an operation to compute a tax but extends the inherited behavior by adding a foreign surcharge,this is an example of overriding for extension.
(True/False)
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All of the following are benefits of object-oriented modeling EXCEPT:
(Multiple Choice)
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A derived attribute,association,or role is one that can be computed or derived from other attributes,associations,or roles.
(True/False)
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Polymorphism occurs when the same operation may apply to two or more classes in different ways.
(True/False)
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A graph of instances that are compatible within a class diagram is called a(n):
(Multiple Choice)
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An operation that applies to a class rather than an object instance is a(n):
(Multiple Choice)
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A class that has no direct instances,but whose descendants may have direct instances is called a(n)________.
(Short Answer)
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