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I'm sorry, I do not know any sites by heart. However, I'm quite familiar with Rational Rose and OOAD. Ask away and we'll see how far we get.
Just a quick-start (you probably know all these things, but just in case...):
- a sequence diagram is based on the class diagram and the use case diagramma. Those two have the building blocks for the sequence diagram.
- 1) place the initial actor at the left of your diagram. This is the actor that will start up the functionality you are describing.
- 2) place the objects who are participating in the process from left to right in the sequence diagram in order of appereance.
- 3) from every object, draw a lifeline. (the dotted line down)
- 4) Activation is the rectangular on the life line. (Activation: the operation that the object makes)
- 5) Place the messages that the objects are sending and receiving horizontaly between the activation of the objects.
(sorry for my language, but i'm still a bit sleepy and never been good at translations of my mind)
Hope this makes things clearer. If not give a shout and i'll do my best.
I remeber my first OOAD lessons... Green! that was the color of my face...
but once you get the hang of it, it goes all well...
__________________
Amerika by Franz Kafka
“As Karl Rossman, a poor boy of sixteen who had been packed off to America by his parents because a servant girl had seduced him and got herself a child by him, stood on the liner slowly entering the harbour of New York, a sudden burst of sunshine seemed to illumine the Statue of Liberty, so that he saw it in a new light, although he had sighted it long before. The arm with the sword rose up as if newly stretched aloft, and round the figure blew the free winds of heaven.”
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