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Allowing for Cross-Database Access via Module Signing

Tom Zika enables cross-database access:

I’ve recently had to revisit this topic and spent a lot of time recalling the details. So I’m writing this blog post mainly as a reminder for myself.

The most helpful part will be the diagram detailing all the components and their relation and a comprehensive example anyone can follow.

I’m not going to cover Module Signing in general (I’ll leave that to Solomon Rutzky).
Nor will I cover other ways to achieve Cross DB access (like Cross DB Ownership chaining) because this is superior from the security standpoint.

Click through to see a good way of providing access to cross-database resources without explicitly granting rights to users.