420 The Method Framework for Engineering System Architectures
Current reusability: the subtype of reusability that is the degree of ease with which externally
produced components can be incorporated with little or no modification into the current
system or architectural component.
Data flow: (1) a flow of data between system functions (logical data flow); (2) a flow of data
between system components (physical data flow).
Data flow diagram: (1) a structured analysis diagram documenting all or part of a logical data
flow model; (2) a diagram documenting all or part of a physical data flow model.
Data flow model: (1) a model of a logical data flow structure, usually represented by one or more
logical data flow diagrams and ancillary text; (2) a model of ...