![]() The Business requirements package should have a single non-derived requirement root element (we will further refer to this element as to root requirement in this document). Contents of the Business Requirements Layer It shows the dependencies between the requirements in top-level requirement packages expressed as «derive» relationships.įigure 2 Dependencies between requirements in top-level packages. For example if the business requirement is ‘The system shall track changes in projects’, then its counterpart in concrete requirements could be ‘The system shall support element-level versioning’.įigure 2 summarizes what has been described so far. Requirements in this package should only depend on the requirements specified in the Business package via the «derive» relationships. This package should contain requirements that implement or satisfy the business requirements. The Requirements package should have three packages under it (see Figure 1):Ĭoncrete. It should be shared so that the development and QA could use the requirements for their needs. The requirements within a project should be expressed in the “shall” form stating how the system should work instead of specifying what has to be changed from the current state.įigure 1 Package structure of a requirements project.Ī requirements project should have a single root package called Requirements which should contain all the requirements under it (directly or indirectly). ![]() “Cameo Infrastructure Requirements” or “MagicDraw Requirements”. The recommended name for the requirements project is ” Requirements”, e.g. Requirement LayersĮvery product (tool, plugin, or framework) should have a single MagicDraw requirements project which should hold requirements for the current state of the product. We hope that this document can lead to a two-way sharing of experience and ideas – if you as a reader have suggestions or questions, you are very welcome for a discussion. experience using the SysML language for developing MagicDraw product itself. In other words, there is quite a lot of information describing language concepts themselves, not so many practical experiences describing how to use that language in the real-world. The biggest issue users have when they start writing requirements using the SysML language is that there is little information on how to properly layout the requirement diagrams, how to relate them to other UML or SysML diagrams, how to structure the requirements project into layers, what the granularity of the requirements should be, how evolution of the requirements should be handled, etc. Prerequisites: basic MagicDraw knowledge basic knowledge of the SysML language requirements part. This document proposes structuring and styling rules that help writing requirements using the SysML language as well as specific MagicDraw capabilities that support this process.
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