Structured analysis and design technique: Difference between revisions

Revision as of 14:53, 14 January 2015

Revision as of 22:50, 20 January 2015

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The semantics of arrows for activities:<ref name ="JM04"/>

* Inputs enter from the left and represent data or consumables that are needed by the activity.

* Outputs exit fromto the right and represent data or products that are produced by the activity.

* Controls enter from the top and represent commands which influence the execution of an activity but are not consumed.

* Mechanisms identify the means, components or tools used to accomplish the activity. Represents allocation of activities.