[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: After XQuery, are we done?
That's the solution I've used and has been used since time immemorial in yeOldeDocumentDatabases. Locally, we call it a joins table. I once implemented a treeview object for such and it was the one time that namespace URIs really came in handy. When we have to create ERDs and document tables, pulling all of the relationships into a simple meta-table is useful and avoids sparseness. The external pointers approach comes in handy when one has multiple endpoints in files/entities/things of different formats. That is why Hytime originally required notation declarations and there was a concept of link types. The local anchor identifies the link which identifies the notation which identifies the target type handler. So the function/dll is named and is passed the link type and the identifier for the target. The target might be read-only and might not be markup and might not have locally stored names for location purposes. So Hytime had types such as nameloc (where a name can be used), treeloc (what got into XPointer and XPath), and so on. One could use byte offsets for links, and so on. There is set of constructs for using dimensions so it was easy to do what HTML later did with maps. Most use namelocs and treelocs and the dimensional locators that I've encountered. len From: Hunsberger, Peter [mailto:Peter.Hunsberger@S...] Hmm, we set out to implement a tree management database and ended up building some limited forms of graphs out of it. You end up cross referencing the nodes in the trees via another table. Sounds like the same thing attacked backwards. > graphs > can easily represent very complex sets of relationships - something > trees will never do. to me this means xml must struggle as > application > or document complexity increases, I've been trying to say exactly this throughout this thread, thank you for the succinct way of putting it. > so there will be a > requirement for a > meta-xml (MXML?). > I'm still wondering if something like Gavin's external pointers on top of XML wouldn't suffice?
|
PURCHASE STYLUS STUDIO ONLINE TODAY!Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced! Download The World's Best XML IDE!Accelerate XML development with our award-winning XML IDE - Download a free trial today! Subscribe in XML format
|