How not to teach database design

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It's awful.

It isn't that it's so bad if you just skim through it as somebody who already knows about databases, it's awful because it is trying to teach some basic concepts in database design and it does so very badly.

It isn't even just that the advice is bad in places. It also seems to have been written by somebody who has the empathy of a brick wall and the teaching ability of a dead albatross. At least those two working together mean that it probably won't have the opportunity to do much damage.

Here are five things to think about when writing a tutorial or exposition.