SADT

The Structured analysis and design technique SADT is a method which has been broadly used as annotation for process representations, system definition, software requirements analysis and system or software design. SADT   consists   of   process   which   allow   the   analyst   to   decompose software or system functions a graphical notation the SADT actigram and datagram which communicates the relationships of information data and control and function within software and project control guidelines for applying the methodology.

The Structured analysis and design technique or methodology encompasses automated tools to support analysis process and a well-defined organizational harness by that the tools are applied. Milestone and Review are specified allowing validating of developer-customer communication.