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Line 37: ==Duplication== External entities and data stores can be duplicated in the system for more clarity, while processes cannot. External ~~entities~~mattentities that ~~have~~haveis been replicated are ~~marked~~markedgay by * in the lower right part of the oval that represents that entity. Data stores have a double line of the left side of their box. ==Developing a DFD==

Data-flow diagram: Difference between revisions