Exam 6: Object Modeling

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Use cases cannot interact with other use cases.

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An object can be viewed as a(n)_____,because a message to the object triggers changes within the object without specifying how the changes must be carried out.

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The _____ of an object is an adjective that describes the object's current status.

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The concept that a message gives different meanings to different objects is called _____.

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Object-oriented (O-O)analysis describes an information system by identifying things called objects.

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Define encapsulation using the black box concept.

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For each use case,a _____ in the form of a table is developed to document the name of the use case,the actor,a description of the use case,and so forth.

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In a class diagram,each class appears as a(n)_____,with the class name at the top,followed by the class's attributes and methods.

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The Unified Modeling Language (UML)represents an object as a _____ with the object name at the top,followed by the object's attributes and methods.

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In a state transition diagram,the states appear as rounded rectangles with the state names inside.

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When use cases are identified,all the related transactions should be kept separate.

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Just as objects are similar to adjectives,attributes resemble verbs that describe what and how an object does something.

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Although the UML can be used for business process modeling and requirements modeling,it is mainly used to support O-O system analysis and to develop object models.

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An object represents a real person,place,event,or transaction.

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A _____ is a command that tells an object to perform a certain method.

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In an object-oriented system,objects can _____ certain attributes from other objects.

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Systems analysts can create diagrams that appear to be correct but are in fact incorrect when it comes to the rules of the UML.

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Class diagrams evolve into code modules,data objects,and other system components.

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The same message to two different objects produces the same results.

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An _____ shows the objects and how they interact to perform business functions and transactions.

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