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Originally posted by dmckay:
Have to do these on my I.T course at college although now we use a program called SSADM to create them on the fly.
Yeah, SSADM has tutorials and also doesnt allow you to connect things wrong like a entity to a data storage directly. Thats a good help, but the thing i hated was thinking all about the processes that happens and all the things involved in them i.e data storage and information of data.
When I used SSADM our delightful college had botched it and there was always a chance whenever you saved and later tried to open any set of files it just wouldnt have it any more and they would be irretrievable. This meant that several assignments which required you to use the software were impossible to do and the college did nothing about it.
Data Flow diagrams 
Linear Mode
