A Practical Guide to SysML, 2nd Edition

8.10 Describing an Analysis Context

A constraint property that constrains the value properties of a block can, as discussed earlier, be part of a block’s definition and thus shown in its constraints compartment. This works well when the constrained properties are intrinsically related in this way in all contexts. What often occurs, however, is that the constraints on block properties vary based on the analysis requirements. For example, a different fidelity of analysis may be applied to the same system block depending on the required accuracy of the value of key properties. This type of scenario requires a more flexible approach such that the properties of the block can be constrained without the constraint being part of the block’s definition. ...