These ideas have been around for a long time. I remember using the ideas a quarter of a century ago! See DEC SRC Report 24, "A simple and efficient implementat

These ideas have been around for a long time. I remember using the ideas a quarter of a century ago! See DEC SRC Report 24, "A simple and efficient implementation for small databases", by Birrell, et al. 1988. http://web.archive.org/web/20051215194340/http://gatekeeper.research.compaq.com/pub/DEC/SRC/research-reports/abstracts/src-rr-024.html http://web.archive.org/web/20051215194340/http://gatekeeper.... I used to read these reports as they came out, very interesting.