16-07-2012, 12:30 PM
Data Flow Diagram:
Data Flow Diagram.docx (Size: 29.09 KB / Downloads: 29)
Data –flow diagrams (DFDs) were introduced and popularized for structured analysis and design.
DFDs show the flow of data from external entities into the system, showed how the data moved from one process to another, as well as its logical storage.
Sequence Diagram
Sequence diagrams model the flow of logic within your system in a visual manner, enabling you both to document and validate your logic, and are commonly used for both analysis and design purposes. Sequence diagrams are the most popular UML artifact for dynamic modeling, which focuses on identifying the behavior within your system.
Use Case Diagram
Use case Diagrams overview the usage requirements for a system. They are useful for presentations to management and/or project stakeholders ,but for actual development you will find that use cases provide significantly more value because describe “the meat” of the actual requirements. Use cases.