The book’s accompanying CD contains trial versions of several JDO implementations, whilst the source code and the enhance and compile scripts that I used for the examples are available from my website:
I recommend you now install the software and compile, enhance, and execute this example.
It would now seem appropriate to discuss briefly what the application is actually doing and how it works; more detail will follow in the forthcoming chapters.
The first thing to notice is that we are using a relational database. However, the only information specific to this fact are the lines of the jdo.proper ties file pertinent to the connection factory (the ConnectionURL and ConnectionDriver properties). There ...