Systems analysis

problem-solving technique that breaks down a system into its component pieces

thumb|right|The plan–do–check–act cycle PDCA (plan–do–check–act), sometimes called plan–do–check–adjust is an iterative design and management method used in business for the control and continual improvement of processes and products. It is also known as the Shewhart cycle, or the control circle/cycle. Another version of this PDCA cycle is OPDCA. The added stands for observation or as some versions say: "Observe the current condition." This emphasis on observation and current condition has currency with the literature on lean manufacturing and the Toyota Production System. The PDCA cycle, with

graphical representation of the "flow" of data through an information system

systematic technique for identification of potential failure modes in a system and their causes and effects

research discipline and practice of identifying business needs and determining solutions to business problems

structured technique for organizing and analyzing complex decisions, based on mathematics and psychology

process of bringing together the component sub-systems into a single one and ensuring that the subsystems function together as a system

Observe–orient–decide–act cycle

someone who analyses the existing or ideal organization and design of systems

technique used in public administration to enable civil servants to examine and evaluate the available options to implement the goals of elected officials

systems approach to the analysis and design of information systems

IT professional who specializes in analyzing, designing and implementing information systems

process of identifying those affected by a project or event

Engineering methodology

thumb|320px|IDEF0 Diagram Example IDEF0 (ICAM Definition for Function Modeling; where ICAM is Integrated Computer-Aided Manufacturing) is a function modeling methodology for describing manufacturing functions, which offers a functional modeling language for the analysis, development, reengineering and integration of information systems, business processes or software engineering analysis.

structured representation of the functions (activities, actions, processes, operations) within the modeled system or subject area

thumb|320px|Example of an IDEF1X diagram.

application of cybernetics to management and organizations

interdisciplinary study of the use of conceptual models to conceptualize and construct systems in business and IT development

engineering diagram displaying high level system-environment relationships

flow Diagram

thumb|360px|Example of an Enhanced Transition Schematic, modelled with IDEF3. IDEF3 (Integrated Definition for Process Description Capture Method) is a business process modelling method complementary to IDEF0. The IDEF3 method is a scenario-driven process flow description capture method intended to capture the knowledge about how a particular system works.

systems analysis design aid