how databases work internally?


i've operative databases final few years i'd cruise i've gotten sincerely efficient controlling them. however i reading recently joel's i realised even nonetheless i query graceful many anything i wish out database, i have thought database indeed interprets query. does anyone know any good articles books explain databases work internally?



some specific things i'm prying are:




  • what does database indeed out matches name statement?

  • how does database conclude join differently query several "where key1 = key2" statements?

  • how does database store the memory?

  • how indexes stored?



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