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RE: XQuery & Several records (instead of one xml-field)

  • From: "Michael Kay" <mike@s...>
  • To: "'Mukul Gandhi'" <gandhi.mukul@g...>,"'Liam Quin'" <liam@w...>
  • Date: Fri, 19 Oct 2007 15:19:41 +0100

RE:  XQuery & Several records (instead of one xml-field)
> So from the primary input (XML infoset, PSVI or something 
> else (like a RDBMS Schema)), an instance of the data model 
> must be constructed, on which a XQuery program can operate 
> (via a XQuery engine).

At a very abstract level, yes. But it doesn't have to be in memory. It can
be on disk, or it can be a view of data represented in some other way (e.g.
tables in an RDBMS). It doesn't even all have to exist at the same time,
that is, it can be a transient stream of SAX events.
> The data model instance is represented by a set of data 
> structures, in say a JVM space.
> Am I correct in saying so?

I think the engineering possibilities are a lot wider than you are

Michael Kay

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