UML Use Case Basics

OK, Use cases have actors. These actors can be people, computers, hardware, companies, systems... but they must be connected to the system somehow. Use cases are done to show how the actors interact with the system. But I have no idea how to draw the diagrams! Time to research.

...

I did some Google Searches and I found that in basic UML Case Diagrams, all actors are represented by a stickman symbol. Even non-human actors. Weird, but... well ok let''s proceed.

The processes are represented by ovals. Every process is connected to the actors using that process by straight solid lines...


Picture courtesy of Agile Modeling

Hey, the basics sound quite simple! But I know, I ain''t seen nothing yet.
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From the Josh Tam Universe