问题
I am using SQL Server 2008.
It seems as though in EF I need a different entity context for each database. Joining tables between databases means having to allow for this which is inconvenient and makes it more likely that I would simply put everything in one database.
Am I missing something? Surely EF can work better than this?
回答1:
You could map your entities to a view that returns joined tables, so your EF model doesn't know about all this technical DB stuff.
回答2:
I don't think it's properly supported, but this guy has managed to get it to work.
Basically, she set up Synonyms for the databases, and hacked the edmx file.
来源：https://stackoverflow.com/questions/11544516/entity-framework-how-to-manage-tables-in-different-databases-but-on-the-same-s