Functional Decomposition: A technique used during planning, analysis and design; creates a functional hierarchy for the software.
Functional Specification: A document that describes in detail the characteristics of the product with regard to its intended features.
Functional Testing: See also Black Box Testing.
Testing the features and operational behavior of a product to ensure they correspond to its specifications.
Testing that ignores the internal mechanism of a system or component and focuses solely on the outputs generated in response to selected inputs and execution conditions.
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