Database per application VS One big database for all applications

Posted by Jorge Vargas on Stack Overflow See other posts from Stack Overflow or by Jorge Vargas
Published on 2010-05-10T16:34:26Z Indexed on 2010/05/10 16:44 UTC
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Hello,

I'm designing a few applications that will share 2 or 3 database tables and all of the other tables will be independent of each app. The shared databases contain mostly user information, and there might occur the case where other tables need to be shared, but that's my instinct speaking.

I'm leaning over the one database for all applications solution because I want to have referential integrity, and I won't have to keep the same information up to date in each of the databases, but I'm probably going to end with a database of 100+ tables where only groups of ten tables will have related information.

The database per application approach helps me keep everything more organized, but I don't know a way to keep the related tables in all databases up to date.

So, the basic question is: which of both approaches do you recommend?

Thanks,

Jorge Vargas.

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