Hello, > -----Original Message----- > From: Lu Cui [mailto:[EMAIL PROTECTED]
> structure is terrifically complex with many levels of > inheritance and references. I might query the db using > some ODMG API like, a.b.c.d.e.f.g, which is seven > levels of references. The final results might contains Depending on the actual mapping to the relational database, the performance must be rather bad because of the many joins, I should say. I do not have experience with that level of complexity. Regarding your statement that your amount of data is fairly small (1 000 000 objects), I guess that OJB can do it. However, you might consider using an object-oriented database, which is optimized for complex class-hierarchies such as yours. Is it a customer's request to use a relational database and an O/R mapper? Olli --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
