SimpleDB is BerkeleyDB (chatterbox.pydinner.org)

Here-say and speculation, although not that far fetched.

That's a totally speculative inference. Amazon is a big company, and just because someone in Amazon wrote a BDB interface for erlang doesn't mean SimpleDB is erlang + BDB.

Not true.

Hmm... if it's BDB, why is SDB lacking so many functionality of BDB then?!

After a cursory look, SDB has more in common with Mnesia than with BDB.

http://erlang.mirror.libertine.org/doc/apps/mnesia/Mnesia_ch...