aaronj1335/cs373-wcdb1-schema — pull request #6 by aaronj1335 (2013-07-04 05:32:14+00:00)
Title: set min PlaceID elements to zero

this finishes the thing i started in #4

my reasoning is
[here](https://github.com/aaronj1335/cs373-wcdb1-schema/pull/5#issuecomment-20459661)