[xquery-talk] [xml-dev] Re: JDBC in an XQuery world (?)
pc.subscriptions at gmail.com
Sun Oct 2 12:20:24 PDT 2011
On 02 Oct 2011, at 20:42, John Cowan wrote:
> Liam R E Quin scripsit:
>>> What if I have (or want) an XQuery database
>>> (or would you call that a XML database with an XQuery interface ...?)
>> SQL/XML I think describes enough of a mapping, no?
> I don't think so. SQL/XML extends SQL to add XML as a new kind of primitive
> SQL data type, like strings, numbers, and dates. What's needed here is a
> way to do ordinary SQL operations over an XDM-based database.
It does do a bit more as far as I understood it, e.g. it also introduce a "schredding" construct, XMLTABLE
Here is an example (http://www.ibm.com/developerworks/data/library/techarticle/dm-0708nicola/)
XMLTABLE ('$d/dept/employee' passing doc as "d"
empID INTEGER PATH '@id',
firstname VARCHAR(20) PATH 'name/first',
lastname VARCHAR(25) PATH 'name/last') AS X
In this case the source is still a table with some XML in some column but I guess making the step to some XML collection in some XML database is not that big.
More information about the talk