dataflow

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dataflow
1. A form of program analysis that examines the relationship between a source of data and the repository or user of that data. Dataflow analysis may be used to show the following: undeclared variables, uninitialized variables, unused variables, use of variables, mismatch of variables across module interfaces, and frequency/density of variable usage.

2. An item on a dataflow diagram that represents a flow of data between two functions or between a function and a data store.