Search results
Results From The WOW.Com Content Network
Architectural decisions influence and impact the non-functional characteristics of a system. Each architectural decision describes a concrete, architecturally significant design issue (a.k.a. design problem, decision required) for which several potential solutions (a.k.a. options, alternatives) exist.
Architecturally significant requirements are those requirements that have a measurable effect on a computer system’s architecture. [1] This can comprise both software and hardware requirements. They are a subset of requirements , the subset that affects the architecture of a system in measurably identifiable ways.
Within systems engineering, quality attributes are realized non-functional requirements used to evaluate the performance of a system. These are sometimes named architecture characteristics, or "ilities" after the suffix many of the words share. They are usually architecturally significant requirements that require architects' attention. [1]
Broadly, functional requirements define what a system is supposed to do and non-functional requirements define how a system is supposed to be.Functional requirements are usually in the form of "system shall do <requirement>", an individual action or part of the system, perhaps explicitly in the sense of a mathematical function, a black box description input, output, process and control ...
Generally, functional requirements are expressed in the form "system must do <requirement>," while non-functional requirements take the form "system shall be <requirement>." [3] The plan for implementing functional requirements is detailed in the system design, whereas non-functional requirements are detailed in the system architecture. [4] [5]
Attribute-driven design [1] [2] (also called ADD or Attribute-driven design method) is a methodology to create software architectures that takes into account the quality attributes of the software. It was previously known as the Architecture Based Design Method (or ABD), but due to trademark issues the name was changed to Attribute-driven ...
Requirements engineering (RE) [1] is the process of defining, documenting, and maintaining requirements [2] in the engineering design process. It is a common role in systems engineering and software engineering .
Requirements can be said to relate to two fields: Product requirements prescribe properties of a system or product. Process requirements prescribe activities to be performed by the developing organization. For instance, process requirements could specify the methodologies that must be followed, and constraints that the organization must obey.