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The systems development life cycle (SDLC) is a process for planning, creating, testing, and deploying an information system. It consists of six stages: requirement analysis, design, development and testing, implementation, documentation, and evaluation.
N2 chart or N2 diagram is a tool to systematically identify, define, and analyze functional and physical interfaces between system elements. It shows the data flow, data elements, and control loops between entities in a bidirectional, fixed framework.
Learn about SADT, a systems engineering and software engineering methodology for describing systems as a hierarchy of functions. SADT uses two types of diagrams: activity models and data models, and was developed by Douglas T. Ross in the late 1960s.
A system context diagram is a diagram that defines the boundary between a system and its environment, showing the entities that interact with it. Learn about its building blocks, alternatives, and examples from various domains.
The waterfall model is a breakdown of development activities into linear sequential phases, meaning they are passed down onto each other, where each phase depends on the deliverables of the previous one and corresponds to a specialization of tasks. [1]
Wastewater is water used or contaminated in various applications or processes. Learn about different kinds of wastewater, such as sewage, industrial, leachate, return flow, surface runoff, and agricultural wastewater.
The V-model is a graphical representation of a systems development lifecycle, used to produce rigorous development lifecycle models and project management models. It consists of three broad categories: the German V-Modell, a general testing model, and the US government standard.
Learn about the system of engineered components that provide water supply, from raw water collection to distribution and treatment. Find out how water quality, pressure, corrosion, and maintenance are managed in water supply networks.