A Data Flow Diagram provides no information about the timing or ordering of processes, or about whether processes will operate in sequence or in parallel. It is therefore quite different from a flowchart, which shows the flow of control through an algorithm, allowing a reader to determine what operations will be performed, in what order, and under what circumstances, but not what kinds of data will be input to and output from the system, nor where the data will come from and go to, nor where the data will be stored (all of which are shown on a DFD).
Data flow diagram of USEP's pre-enrollment system
General Diagram- The general data flow diagram of the system.
Context Diagram- defines the scope of the system by identifying the system boundary.
Level-0 Diagram- describes the overall processing of the system.
References:
http://en.wikipedia.org/wiki/Data_flow_diagram
General Diagram- The general data flow diagram of the system.
Context Diagram- defines the scope of the system by identifying the system boundary.
Level-0 Diagram- describes the overall processing of the system.
References:http://en.wikipedia.org/wiki/Data_flow_diagram
0 comments:
Post a Comment