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Editorial Team
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Asked: 2026-06-03T04:08:54+00:00

I created a database mdf file a while back and created a diagram of

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I created a database mdf file a while back and created a diagram of foreign keys. Lately, I needed to add several tables and there was an error saying I couldn’t do the diagram because I’m not the owner.

So, I didn’t update the diagram but added the tables anyway. My app seems to be working fine with the new tables. I’m using linq-to-sql and the design surface of the ORM doesn’t show the connection between the new and the old tables.

My question is this: if the app works both with and without the diagram, what’s the benefit of creating one? I know I can read an 800-page book and get the answer but I was wondering what the 2-3 line answer would be.

Thanks.

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1 Answer

  1. Editorial Team

    Diagram is just modeling tool.. no need to use it, but cool to visualise db, easier to write queries if you’re not creator of db.

    You can switch owner of db in options at “File” tab.

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