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I've written beforeĀ about how databases are like a car engine, and DBAs are like a car mechanic. That's been the traditional view for production DBAs for, well, forever I think. And that analogy may have been true at one time, and may still be true for some DBAs. But the industry...

Parallax is defined as "a displacement or difference in the apparent position of an object viewed along two different lines of sight". It is often used when talking about the motions of stars and planets, since parallax can be used to calculate distance to far away objects. Parallax is also...