I am doing a uni assignment and just have a quick question regarding data flow diagram datastores. If you have, for example, a CD that you put information on and you file the CD away, the cd is a data store as is the folder it is stored in. How do you represent this, I don't think you can have a data store in a data store, plus the CD is also a data flow.
Any suggestions gratefully appreciated.
Cheers
Emz