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Difference between revisions of "Requirements-Dynamic Model"
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===State Machine=== | ===State Machine=== | ||
The behavioral aspect of a class is defined in a state diagram associated with a class in an information model. State diagrams, which show all of the potential states for a class, are developed for classes that are the central subject of an interaction. These classes are called subject classes. Interactions are sometimes motivated by changes in the state of a subject class. For example, Act may be identified as a subject class. The vocabulary domain for the Act.status_cd declares the defined states for the Act. Those states include Active, Suspended, Cancelled, Complete, and Aborted. A state diagram depicts the allowable class states with a box labeled with the name of the state. Changes in state are called state transitions and are depicted in the diagram by a line with a arrowhead showing the direction of the transition. An example of a state transition might be the change in the state of an Act from Active to Complete. The change in state (state transition) is associated with a trigger event that causes the transition. The trigger event in this example might be the fulfillment of an order. An order is a special type of Act. The transition from an Active order to a Completed order is triggered by the fulfillment of the Order. The state diagram depicts the states, trigger event, and state transitions of interest. | The behavioral aspect of a class is defined in a state diagram associated with a class in an information model. State diagrams, which show all of the potential states for a class, are developed for classes that are the central subject of an interaction. These classes are called subject classes. Interactions are sometimes motivated by changes in the state of a subject class. For example, Act may be identified as a subject class. The vocabulary domain for the Act.status_cd declares the defined states for the Act. Those states include Active, Suspended, Cancelled, Complete, and Aborted. A state diagram depicts the allowable class states with a box labeled with the name of the state. Changes in state are called state transitions and are depicted in the diagram by a line with a arrowhead showing the direction of the transition. An example of a state transition might be the change in the state of an Act from Active to Complete. The change in state (state transition) is associated with a trigger event that causes the transition. The trigger event in this example might be the fulfillment of an order. An order is a special type of Act. The transition from an Active order to a Completed order is triggered by the fulfillment of the Order. The state diagram depicts the states, trigger event, and state transitions of interest. | ||
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+ | [[Image:RIM_ActStatus.gif|800px]] | ||
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+ | ===Class Diagram using UML=== | ||
[[Image:RIM_ActStatus.gif|800px]] | [[Image:RIM_ActStatus.gif|800px]] | ||
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| ''Rationale'' | | ''Rationale'' | ||
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| ''MIF'' | | ''MIF'' |