Things You Should Know About Databases

This one popped up in my feed today: Things You Should Know About Databases. My favourite quote was this one:

The SQL standard defines 4 standard isolation levels these can and should be configured globally (insidious things can happen if we can’t reliably reason about isolation levels).

It’s so important to know what isolation level is applicable to your connection/transaction.

PVC insulated cables

So I asked about cleaning cables over here and apparently the material on the outside of a typical cable is PVC (Polyvinyl chloride), AKA “vinyl”. The jury is still out on what the best cleaner is for vinyl, but options include WD40, IPA, and metho (ethanol). I was worried that such solvents might damage PVC around electrical cables, but apparently it won’t.