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I also don't think it's a good idea. If you don't use the database specific functions out of fear you aren't able to switch anymore, you are probably wasting a lot of potential performance.

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I think "changing the DB" likely referred to schema changes, not swapping out the DBMS.

> > > > It also makes changing your DB a lot easier since APIs using the DAL don't need to be updated since they're DB agnostic [emphasis mine]

I took it as changing the DBMS under the hood.

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