use Perl

[%
  USE db = DBM.Deep("my.db" locking = 1 autoflush = 1);
  db.lock;
  db.flintstones = { "flintstone" = ["fred" "wilma"]
                        "rubble" = ["barney" "betty"] };
  db.castaways = ["gilligan" "skipper" "professor" "and the rest" ];
  db.unlock;
-%]
... later that day, or in a different process ...
[% db.flintstones.rubble.get("0"); %] -- barney
[% db.castaways.get("3"); %] -- and the rest

Cool.