There is an ever-increasing need to rapidly deliver products, whilst, at the same time, also delivering products of high quality. To improve the quality of products and increase productivity within software development processes, all phases of the development process must fit together well. While defining requirements for the system, it must be ensured that the correct requirements are defined as well as ensure that they can be translated into a design fulfilling the requirements. The earlier the correct requirements are found, the easier and cheaper it will be to design good products. Finally, the design must be verified against the correct requirements. To realize this, requirements traceability is of extreme importance for development processes. The nonfunctional requirements (NFR) are particularly important and difficult. In this paper, we will report on an integrated tooling solution for a Domain-Specific Modelling approach that enables and guides towards defining accurate and non-conflicting requirements. Additionally, the solution enables a full bidirectional traceability from the requirements to models to the implementation, and offers an up-to-date overall view of the state of the requirements within the product.
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