Term
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Definition
| Least detailed picture of a system that defines the process being documented and shows the data flows into and out of the process to external entities |
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Term
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Definition
| Those entities (i.e., persons, places, or things) outside the system that send data to, or receive data from the system. |
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Term
| Logical Data Flow Diagram (DFD) |
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Definition
Graphical representation of a system showing the system's processes (as bubbles), data stores and the flows of data into and out of the processes and data stores
Specifies what activities the system is performing
Logical DFDs portray a system's activities |
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Term
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Definition
When two DFD's have equivalent external data flows
Only balanced sets of DFD's are correct
each of the context diagrams and their related logical DFDs (level 0 and 1, etc.) must show the same external entities and if applicable the same data stores and data flows. |
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Term
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Definition
| The successive subdividing (exploding) of logical DFDs |
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Term
| Analyze a given narrative |
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Definition
- Review carefully
- number the paragraphs
- number the rows
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