Data flow diagram are represented in hierarchical order. Data objects are represented by circles which are also called bubble charts. One bubble at a time should be refined.ĭata flow diagram consists of a series of symbols joined together by a line.Data objects that flow into transformation at the more refined level. That means the data objects that flow into the system of any transformation at one level must be the same. Information flow continuity must be maintained from level to level.
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It can be easily converted into software as they just represent flow of the data objects.Data flow diagram shows end to end data processing. It is also cay as the Functional model as it is a graphical representation of an enterprise function within a defined scope.Data flow diagram is used to model the system’s data processing.State machine model is also known as State diagram which is used to show how the system will react with external events. Data processing models are also known as DFD (Data Flow Diagram) which is used to show how data is processed as it moves through the system. There are two types of behavioral models that are used to describe the system behavior, one is data processing model and another is state machine models.
In software engineering, behavioral model describe the overall behavior of the system. Introduction to Behavioral Model in Software Engineering
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