On Tue, Aug 18, 2009 at 02:11, Andrew Dunstan<andrew(at)dunslane(dot)net> wrote:
> Tom Lane wrote:
>> Andrew Dunstan <andrew(dot)dunstan(at)pgexperts(dot)com> writes:
>>> The attached tiny patch sets the <explain> root element for auto-explain
>>> XML output, so it looks something like this:
>> This looks reasonable in itself, but it sort of begs the question on
>> two other things:
>> * what's the xmlns URL really going to be?
> By convention it refers to a place where you publish the schema for the
> document type, but it is in fact completely arbitrary, and can refer to a
> non-existant resource - as long as it is unique - it's just a namespace
> designator, and from an XML POV has no more semantic significance that a
> schema name does in SQL.
I'd suggest using a different namespace than www.postgresql.org, just
to be sure it won't conflict with some system we use in the future.
Perhaps http://schemas.postgresql.org/<whatever>? It doesn't actually
need to exist until we want to put anything there, but it mustn't
conflict with anything else.
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