| Type of requirements | Documenting formats |
|---|---|
| Primary (custom) requirements |
Arbitrary text - requirement is formulated in the user's language (issues, queries, change requests). User story - text is written in a certain way, reflecting a goal and business context of required functionality. |
| Business requirements |
Files received from external sources (regulations, laws, correspondence, etc.) Hierarchically structured requirements (documents) with verbal description of business processes, business rules and business limitations. Requirements written in the form of business models, e.g., with BPMN notation. |
| System requirements |
Technical specification is a document that contains requirements of different types and a common text. Specification is a document that contains requirements of one type regarding one subsystem. Use case is a requirement that is written in a certain way describing interaction with system. UML models are requirements to information, structural and behavioral aspects of the system written in the well-known modeling language. UI layouts - requirements to user interface. |
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