Podcast
Questions and Answers
What is the minimum number of input data-flows and output data-flows required for a data store?
What is the minimum number of input data-flows and output data-flows required for a data store?
- Two inputs, two outputs
- One input, one output (correct)
- Multiple inputs, one output
- One input, multiple outputs
What is the purpose of a context diagram?
What is the purpose of a context diagram?
- To show data storage only
- To show one process, representing the entire system (correct)
- To show external entities only
- To show multiple processes, not representing the entire system
What is the notation used to show data flows in a data flow diagram?
What is the notation used to show data flows in a data flow diagram?
- Only Yourdon
- Only Gane & Sarson
- Several notations, including Yourdon, De Marco, Gane & Sarson, and SSADM (correct)
- Only Unified Modeling Language
What is the process number assigned to the context diagram?
What is the process number assigned to the context diagram?
What is the purpose of examining the data flow to or from a data store?
What is the purpose of examining the data flow to or from a data store?
What is the purpose of working backward from an output data flow?
What is the purpose of working backward from an output data flow?
What is the maximum number of processes that can be included in a level?
What is the maximum number of processes that can be included in a level?
What is not included in a context diagram?
What is not included in a context diagram?
What is the purpose of analyzing a well-defined process?
What is the purpose of analyzing a well-defined process?
What is an example of an external entity in a data flow diagram?
What is an example of an external entity in a data flow diagram?
Flashcards
Minimum data-flows for data store
Minimum data-flows for data store
One input and one output data flow is required.
Purpose of a context diagram
Purpose of a context diagram
To show one process that represents the entire system.
Notations for data flows
Notations for data flows
Several notations are used, including Yourdon and Gane & Sarson.
Process number in context diagram
Process number in context diagram
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Purpose of analyzing data flow to data store
Purpose of analyzing data flow to data store
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Working backwards from output data flow
Working backwards from output data flow
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Maximum processes in a level
Maximum processes in a level
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What is excluded in a context diagram
What is excluded in a context diagram
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Purpose of analyzing a well-defined process
Purpose of analyzing a well-defined process
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Example of an external entity
Example of an external entity
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