yet another change for CowDb?

Right now the CowDb API is complicated by the fact that some nodes are embeded in others (makes for fast retreival) while others are placed in their own physical block. And when we introduce XML transforms, we need to preserve that information. Besides being a pain, it will also be added clutter in the XML document. Not good.

Now the amount of metadata we are carrying on a role has grown lately, but perhaps we need to add one more flag to carry this information. then we can drop the addReference and makeReference methods. This will will make the sample code much easier to understand, and that is important too.

So I'll add another planned feature to CowDb, just when I thought we were done with it. But for the moment my focus will be on COODBMS.