Level 1 Data Flow Diagram (DFD)

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A level 1 data flow diagram provides greater detail than a Level 0 diagram, as they display each process involved within the system as an individual circle, meaning the result will contain multiple circles / processes. A Level 1 DFD also has a shape for data stores to represent storage locations where data is sent and retrieved from, such as a specific database.

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sometimes and entity make transformation + store , how to represente this entity ? it also entity, prpocess and store data!