State Diagram and Use-case Diagram

In today's lesson we have been discussing about two of the Modeling Notations for a system, which are Statechart diagram and Use-case diagram.
We also have learn on how to produce both diagrams.

Before starting to sketch a statechart diagram, we must difine all the states and stimulus that occur in the system.In the diagram, each state is represented by a rectangular, labeled with the system state, which has to be a noun. Each box is connected by arrows and the arrows are labeled with the stimulus to the state.

example of a Statechart Diagram:


Other Modeling Notation that we've discuss today is Use-case diagram. To produce a Use-case diagram, we have to defind all the actors that play role in the system. We also have to state the processes that the system does. In the diagram,an actor is represented by a stickman, and a process is labeled below an oval. A line between the actors and ovals has to be drawn clearly, to show how their connection to the process of the system.

example of a Use-case Diagram:



ps:for not having breakfast in class, as always, we looked blank and blurr in class, n Pn. Badariah suggested that maybe she has to bake a cake for us, for breakfast...hoho......ehehhee...bertuahnye jadi ur studs...