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top-down design
subject			fact

top-down design	has definition An approach to design in which one starts with the high-level architecture of the system, then elaborates the design of subsystems until finally designing the low-level details such as the structure of individual classes
	has advantage gives the system being designed a good structure
	is a subtopic of 9.1 - The Process of Design
	is a kind of design
design	determines how components will be implemented in a system
	has goals Increasing profit by reducing cost and increasing revenue Ensuring that we actually conform with the requirements, thus solving the customers' problems Accelerating development, which helps reduce short-term costs, and may also ensure the software reaches the market soon enough to effectively compete Increasing qualities such as usability, efficiency, reliability, maintainability, and reusability which can help reduce costs and also increase revenues
	has part detailed design
	has part modelling
	has part programming
	has part software architecture^2
	has part systems engineering
	has part user interface design
	requires considerable experience
	see also design^2

Kinds of top-down design :

• top-down approach to identifying generalizations (4 facts)