Why I Rarely Use HABTM
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I was chatting with Kori Roys about database design and I mentioned offhandedly that I almost never use has_and_belongs_to_many in Rails. Kori’s ears perked up and he asked why that is.

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Rules of Database App Aging
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I mentioned I’ve learned some rules of how database apps change over time, now that I’ve done a few dozen. They are:

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