DDD Sample Application - Where's the hsqldb?

I downloaded the DDD Sample Application (based on book by Eric Evans) and it uses a hsqldb. However, I can't seem to find how this db is set up. I opened the project in Intellij and everything builds like a charm. But nowhere do I find such a hsqldb... I'm not an experienced Ja开发者_开发知识库va developer, so I'm probably missing something. Anyone that can answer this for me?

HSQLDB (also called HypersonicDB) is usually used as an embedded SQL database in trivial java apps. You can download it here. It's very simple to set up, and usually works just by having the JAR file in your classpath, the sample app should have the appropriate config.