Hi, First of all thank you for your reply,
A the beginning, I tried the first example from the castor documentation: Marshalling and Unmarshalling (the example with the Person class, Castor reference guide, 1.1.2). That was working very well. Now, I would like to go a step further: I would like to communicate with a relational database. I read the castor documentation, and when I read the third chapter, it mentioned JDO. After a bit searching on the sun documentation, I read this: "If you are an application programmer, you can use JDO technology to directly store your Java domain model instances into the persistent store (database)." And that is exactly what I need : passing from Java (or if it could be XML it would be better) to a database. And now I'm trying to do what is said in the third chapter of the doc. But because of the fact that the example is quite big, I didn't manage to make it function (see previous mail called from XML to relationnal data). That's why I am trying now to write a simple example that would work. Therefore, I re used my Person.java class. I'm now writing an XML and an XML schemas to be able to generate the so called "domain classes" and/or "descriptor classes". I have to admit that their use isn't clear to me yet. So I wrote
