Context: System view from any useful perspective [TGilb]. Contractor: see Vendor COTS: Acronym for Commercial Off-The-Shelf software. See off-the-shelf software. Coverage: The degree, expressed as a percentage, to which a specified coverage item has been exercised by a test suite. Context diagram: A diagram that represents the actors outside a system that could interact with that system. Criticality of requirements: Evaluation of the risk of a requirement by evaluating the damage in case of non-fulfillment of a requirement. Customer: Current or potential buyer or user of the products or service of an individual or organization, called the supplier, seller, or vendor.
