Structured analysis: Difference between revisions

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== Objectives of structured analysis ==

Structured analysis became popular in the 1980s and is in still in use today. {{Citation needed|date=March 2016}} Structured analysis consists of interpreting the [[system]] concept (or real world situations) into data and control terminology represented by [[data flow diagram]]s. The flow of data and control from bubble to the data store to bubble can be difficult to track and the number of bubbles can increase.

One approach is to first define events from the outside world that require the system to react, then assign a bubble to that event. Bubbles that need to interact are then connected until the system is defined. Bubbles are usually grouped into higher level bubbles to decrease complexity. [[Data dictionary|Data dictionaries]] are needed to describe the data and command flows, and a process specification is needed to capture the transaction/transformation information.<ref name="FAA00">FAA (2000). [http://www.faa.gov/regulations_policies/handbooks_manuals/aviation/risk_management/ss_handbook/media/app_d_1200.pdf ''FAA System Safety Handbook, Appendix D'']. December 30, 2000.</ref>