The fourth phase in the Software Development LifeCycle is the Requirements Phase. We have now finished the documents for the Initiation, Software Concept Development and Planning phases. Next, we write the technical documents to capture user requirements, business requirements and functional specifications.
Functional requirements explain what has to be done, and identified. The necessary task, action or activity that must be accomplished. Functional requirements analysis will be used as the top-level functions for functional analysis. Functional Requirements Excel spreadsheet Performance Requirements The extent to which a mission or function must be executed; generally measured in terms of […]
Requirements are categorized in several ways. The following are common categorizations of requirements that relate to technical management. The customers are those that perform the eight primary functions of systems engineering, with special emphasis on the operator as the key customer. Operational requirements will define the basic need and, at a minimum, answer the questions […]
Best practices take the list of requirements merely as clues and repeatedly ask why until the business processes are defined. Stakeholders and developers can then devise tests to measure what level of each goal has been achieved. Goals change more slowly than the long list of specific but unmeasured requirements. Once a small set of […]
A major new emphasis in the 1990s was a focus on the identification of stakeholders. It is increasingly recognized that stakeholders are not limited to the organization employing the analyst. Other stakeholders will include: Organizations that integrate horizontally with the organization the analyst is designing the system for Back office systems or organizations Senior management […]
Requirements analysis includes three types of activity: Eliciting requirements: the task of communicating with customers and users to determine what their requirements are. This is sometimes also called requirements gathering. Analyzing requirements: determining whether the stated requirements are unclear, incomplete, ambiguous, or contradictory, and then resolving these issues. Recording requirements: Requirements may be documented in […]
Requirements analysis in software development encompasses those tasks that go into determining the needs or conditions to meet for a new or altered product, taking account of the possibly conflicting requirements of the various stakeholders, such as beneficiaries or users. Requirements analysis is the first stage in the systems engineering process and software development process. […]
There are many aspects to consider in the design of a piece of software. The importance of each should reflect the goals the software is trying to achieve. Some of these aspects are: Compatibility – The software is able to operate with other products that are designed for interoperability with another product. For example, a […]