We discussed about analysis this week. We discussed how to put our analysis into models. Models such as the use case model, event table, class diagram and many more. We put more emphasis on the event table as it is the upcoming requirement for our assignment.
An event can be classified under three different types; External, Temporal and State(Internal). External events are events that happen outside the system, usually initiated by an external agent or factor. A simple example would be a passenger pressing the lift button to call for the lift. Temporal events occurs when the system reaches a certain point in time. An example to that would be daily backups by the servers. By a certain time listed by the Administrators, the system will execute a backup event. The internal or state event is stuff that happens inside the system. This events are very minute like the system accessing the database.
We went on to talk about things. Things that affect the system one way or another. I think they are just things that interact with the system or a word/noun to describe something. I do not know for sure what it is but that will have to leave to the reading up then...
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Nice picture :D
Getting a feel for what a 'thing' is in a modelling context is something that comes from practice. Read the text book (several times if you need to) and do the exercises. After a while it will just come naturally, and you'll end up looking at everything in terms of classes in a class diagram (it's kind of annoying actually!)
Cheers,
Rob.
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