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Asked: 2026-05-28T17:51:47+00:00

I am trying to create data model for a graph with Node and Edge.

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I am trying to create data model for a graph with Node and Edge. If Edge does not contain any property I can simply create many-to-many association from a Node to itself. However I want to store some properties on the Edge e.g. Distance. I tried to create another entity but didn’t find a way to declare the relationship between Edge and Node. Is it possible in Model First? How?

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  1. Editorial Team

    You must create two one-to-many associations from Node to Edge to model self referencing many-to-many relation with mapped junction table. In terms of graph theory EF models creates oriented graph so it differs between edge from A to B and from B to A.

    You will start with your two entities and their properties:

    enter image description here

    You will drag the first Association from Toolbox. Start at Node and drag association to Edge – it will create one-to-many relation between Node and Edge. Configure properties of created navigation for “Outgoing” edges:

    enter image description here

    You will drag the second Association in the same way and configure its properties for “Incoming” edges:

    enter image description here

    After generating a database from this model you will get this table structure:

    enter image description here

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