A few questions

[Ray Plante]

On Thu, 8 Jul 2004, Wil O'Mullane wrote:

> > This is a detail we have not addressed.  Our options are: 
> > 
> >   1. we do things the proper XML way:  the ADQL query itself defines the 
> >      prefixes it will use.  
> > 
> >   2. we mandate the use of predefined prefixes:
> > 
> >         vr:interface/vs:resultType='text/xml+votable'
> 
> 1. Will only work for ADQL/x - remeber we also have ADQL/s

This is a good point.  

The motivation for using simple XPaths in place of column names is that it 
accommadates both XML and relational databases to a reasonable degree.  To 
a relational database, these paths are just strings that map to column 
names (or they may be the actual column names).  It should *not* be 
necessary for the RDB registry to parse the XPath.  I think this is a good 
argument to throw out 1).  

With regard to [], I think I've demonstrated that we really do not need to 
allow them.  Do people agree?

cheers,
Ray