Try Oracle's free windows database XE (Express Edition) available for a quick and easy download and install from oracle.com
It's 10g (not the latest oracle version, which is 11g, but it's unlikely you'll need any of those newer features).
It comes with APEX which is Oracle's easy to use IDE (Integrated Development Environment)
We're a big oracle user and we use this for local development because it's so quick and easy to install and use. We then port that code into their industrial-strength enterprise databases for 'production'.
