What are the elements found on either end of a verify relationship? 13. To more clearly express a requirement 12. What is a satisfy relationship used for? (Select from answers a–c.) a. How do you represent the rationale for the derived requirement in Figure 12.14that the derivation is based on the xyz analysis? 11. How do you represent a «deriveReqt» relationship between Reqt A and Reqt B in a matrix? 10. How do you express the requirement relationship in Question 6 using compartment notation? 9. How do you express the requirement relationship in Question 6 using callout notation? 8.
What type of requirement relationships can only exist between requirements? 6. Which standard properties are expressed in a SysML requirement? 4.Ĭan you add additional properties and constraints to a requirement? 5. Which kind of model element can the frame of a requirement diagram represent? 3. What is the abbreviation for a requirement diagram that appears in the diagram header? 2. Matrices can be used instead of diagrams. Requirements often appear in architecture models, to remind us which requirements refer to which represented model elements. Here, requirement modeling enables requirements to be positioned and several types of links to be defined between requirements and the rest of the model. Requirements can be presented in graphical form. For example, a use case can express test sequences, which check whether or not a requirement is satisfied.
Once captured in the model, the requirements can be related to other requirements, design elements, analysis, and test cases using derive, satisfy, verify, refine, trace, and copy relationships. The requirements may have been created in the SysML modeling tool or, alternatively, in a requirements management tool or a text document and imported into the model. The text for the Maximum Acceleration requirement is “The vehicle shall accelerate from 0 to 60 mph in less than 8 seconds under specified conditions” and the text for the Fuel Efficiency requirement is “The vehicle shall achieve a minimum of 25 miles per gallon under specified driving conditions.”
#REQUIREMENT DIAGRAM MAGICDRAW VERIFICATION#
Each requirement includes a unique identification and the text of the requirement, and can also include other user-defined properties that are typically associated with requirements, such as verification status and risk. The Vehicle Performance requirement contains requirements for Maximum Acceleration, Top Speed, Braking Distance, and Turning Radius. The Automobile Specification contains requirements for Passenger and Baggage Load, Vehicle Performance, Riding Comfort, Emissions, Fuel Efficiency, Production Cost, Reliability, and Occupant Safety. The Automobile Specification is the top-level requirement that contains the other requirements. The line with the crosshairs symbol at the top denotes containment.
The requirements are shown in a containment hierarchy to represent their parent–child relationships. The diagram presents the requirements that are typically captured in a text specification. Requirement diagram showing the system requirements contained in the Automobile Specification.
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