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All three relationships can be displayed visually as a line or arrow, but also expressed implicitly through proximity, containment, indentation or alignment on a grid. | All three relationships can be displayed visually as a line or arrow, but also expressed implicitly through proximity, containment, indentation or alignment on a grid. | ||
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|keywords=EDGY, | |||
|description=EDGY defines three types of relationships each of which can connect two elements to express their interplay. This limited number reflects a deliberately simplified model compared to other visual languages used in engineering practice. EDGY is Intersection Group's Open Source tool for collaborative Enterprise Design. | |||
|image_alt=EDGY Relationships | |||
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Latest revision as of 19:08, 8 June 2023
Relationships
EDGY defines three types of relationships each of which can connect two elements to express their interplay. This limited number reflects a deliberately simplified model compared to other visual languages used in engineering practice.
Using just three relationships, various enterprise elements can be collected and connected:
Link
A link relationship describes an association between two elements.
Flow
A flow relationship describes a behaviour or dynamic sequence between two elements, and the passing of objects between them.
Tree
A tree relationship describes a containment or aggregation between a parent and a child element of the same type.
Relationships connect elements
The link relationship is an association between two elements. By default it is non-directional and unnamed and just shows that the two elements are related. Links can also be made directional by giving them a direction and a name.
The flow and tree relationships are unidirectional, describing a source and a target endpoint.
If a bi-directional connection between elements is intended, two relationships should be defined: one from element A to element B and one from B to A.
All three relationships can be displayed visually as a line or arrow, but also expressed implicitly through proximity, containment, indentation or alignment on a grid.