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pipe and filter (transformational architectural pattern, transformational architecture)
subject			fact

pipe and filter	has definition An architectural pattern in which data in a standard format is passed through a series of processes (filters) that transform it in some way
	facilitates designing for testability because it is normally easy to test the individual processes
	has advantage the system can be modified easily by adding or changing the transformational processes
	increases cohesion because the processes have functional cohesion
	increases flexibility
	increases reusability because the processes can often be used in many different contexts
	increases reuse because it is often possible to find reusable components to insert into a pipeline
	is a subtopic of 9.5 - Architectural Patterns
	is a kind of architectural pattern
	reduces coupling because the processes have only one input and one output, normally using a standard format
	uses a pipeline
	is a synonym of transformational architectural pattern
	is a synonym of transformational architecture
architectural pattern	allows you to design flexible systems using components that are as independent of each other as possible
pattern	should be as general as possible
	should be described in an easy-to-understand form so that people can determine when and how to use it
	should contain a solution that has been proven to effectively solve the problem in the indicated context

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