What rae the Do's and Dont's of creating using the Data flow diagram?

Dos and Don’ts when constructing a data flow diagramExternal entity should never communicate with each other as this will signifies that there is no need for the process. External entity should not communicate directly with data store because external entities can interfere with the records of files and the database.

Dos and Don’ts when constructing a data flow diagram.

External entity should never communicate with each other as this will signifies that there is no need for the process.

External entity should not communicate directly with data store because external entities can interfere with the records of files and the database.

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