On Sunday, April 7, 2002, at 08:26 PM, Jayaram Narayana wrote:
hi!
a general XML question for xindice developers, but any help or pointers are
always worth the effort, aren't they?
how can primary keys be expressed in xml documents? The problem is something
like this:
* there are many elements in an XML document
* each element has to be mapped to another XML document with many elements
uniquely, i.e., each element in doc A has to map to a unique element in doc
B.
* how can this be achieved, with all the mapping info invisible to the one
viewing doc A or doc B?
* and is there anything 'special' needed for all this to work on xindice?
Right now you'd probably need to implement this at the application level. There are no real relational concepts in the database. The same applies to your join question.
We really need someone to step up and start working on XQuery support which will solve some these problems.
hope i am clear.
many thanks in advance, -nani
Kimbro Staken Java and XML Software, Consulting and Writing http://www.xmldatabases.org/ Apache Xindice native XML database http://xml.apache.org/xindice XML:DB Initiative http://www.xmldb.org
