It’s been said that ninety percent of the time you think there is a one-to-one relationship in NHibernate it’s really a many-to-one. I’ll agree with that. But this post is about one of the ten-percent cases when a single entity spans several table schemas.

So the scenario is one where you have a thing that can be extended with additional data. And capabilities, of course, but this post is just about the data. In a traditional app it’s very straightforward to add additional fields when a new feature is added.
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