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20 Cards in this Set
- Front
- Back
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interaction diagram
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either a communication diagram or a sequence diagram that shows the interactions between objects
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lifeline or object lifeline
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the vertical line under an object on a sequence diagram to show the passage of time for the object
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true/false condition
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part of a message between objects that is evaulated before the message is sent to determine whether the message can be sent
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use case diagram
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a diagram showing the various user roles and the way those users interact with the system
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system sequence diagram
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a diagram showing the sequence of messages between an external actor and the system during a use case scenario
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statechart diagram
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a diagram showing the life of an object in states an transitions
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scenario, or use case instance
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a particular sequence of steps within a use case; a use case may have several different scenarios
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precondition
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a set of criteria that must be true prior to the initiation of a use case
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postcondition
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a set of criteria that must be true upon completion of the execution of a use case
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pseudostate
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the starting point of a statechart, indicated by a black dot
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state
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a condition during an object's life when it satisfies some criterion, performs some action, or waits for an event
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transition
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the movement of an object from one state to another state
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destination state
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the state to which an object moves during a transition
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origin state
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the original state of an object, from which a transition occurs
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message event
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the trigger for a transition, which causes an object to leave its original state
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guard-condition
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a true/false test to see whether a transition can fire
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action-expression
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a description of the activities to be performed
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concurrency, or concurrent states
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the condition of being in more than one state at a time
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concurrency, or concurrent states
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the condition of being in more than one state at a time
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composite state
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a state containing multiple levels and transitions
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