The UML Interactions metamodel, however, reveals some deficiencies for precise specifications of data values and data flows. Even UML 2.5 still does not provide concepts for data flows in UML ...

See Figure 4 for an example. Hyperlink data flow types to their sources in case existing systems need to be integrated. See Figure 5. Behavioral aspects of the use-case model. Draw interaction ...

Data flow diagrams (DFDs) are graphical representations of how data moves and transforms in a system. They are useful for business systems analysis because they help you understand the processes ...