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Asked: 2026-05-20T06:08:48+00:00

I would like to map all many-to-may relations through a single table in my

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I would like to map all many-to-may relations through a single table in my database.
Meaning that I have numerous tables (entities) that have various many-to-many relations. Instead of having a separate mapping table for every relation I would like to use one “master mapping” table having to columns: End1Id & End2Id.

Don’t ask why 😉 It’s required by my customer…

How would I set this up in the model designer, or do I have to edit the edmx xml directly….or is it just not possible?

Thanx for your help!

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1 Answer

  1. Editorial Team

    In such a scenario you can’t have explicit foreign keys, because a table like this normally has at least three rows:

    1. PK of table 1
    2. PK of table 2
    3. Type of mapping, which specifies the exact tables to use.

    Because of that, you can just create a table in EF, but it will also have no connections to other tables and you will have to do the joins manually.

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