10 Questions
What is the minimum number of input data-flows and output data-flows required for a data store?
One input, one output
What is the purpose of a context diagram?
To show one process, representing the entire system
What is the notation used to show data flows in a data flow diagram?
Several notations, including Yourdon, De Marco, Gane & Sarson, and SSADM
What is the process number assigned to the context diagram?
0
What is the purpose of examining the data flow to or from a data store?
To identify fuzzy areas
What is the purpose of working backward from an output data flow?
To examine the data flow from an entity on the input side
What is the maximum number of processes that can be included in a level?
9
What is not included in a context diagram?
Data storage
What is the purpose of analyzing a well-defined process?
To understand how a process works
What is an example of an external entity in a data flow diagram?
Mother
Test your understanding of data flow diagrams, their notations, and importance in systems analysis. Learn to create and analyze logical and physical DFDs to capture data movement in an organization. Evaluate your knowledge of parent and child level diagrams, system inputs, processes, and outputs.
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