product-type vocabulary URI

[mbtaylor]

Section 3.2.9 describes the content_qualifier column and references

the IVOA product_type vocabulary (currently at https://www.ivoa.net/rdf/product-type/)

This language is a bit different from that used in section 3.2.6 which references the core DataLink vocabulary; in particular it appears to give a dereferenceable URL explaining where to find the vocabulary content rather than the URI giving the vocabulary namespace - it uses the "https" scheme rather than "http".

@msdemlei can you take a look and reword if necessary? If you're happy with it then I'm sure it's OK.

[mbtaylor]

I guess it should explicitly mention the prepended "#" sign too.

[msdemlei]

On Fri, Oct 22, 2021 at 04:20:34AM -0700, Mark Taylor wrote: Section 3.2.9 describes the `content_qualifier` column and references > the IVOA product_type vocabulary (currently at https://www.ivoa.net/rdf/product-type/) This language is a bit different from that used in section 3.2.6 which references the core DataLink vocabulary; in particular it appears to give a dereferenceable URL explaining where to find the vocabulary content rather than the URI giving the vocabulary namespace - it uses the "https" scheme rather than "http". @msdemlei can you take a look and reword if necessary? If you're happy with it then I'm sure it's OK.

All good points; given VocInVO 2, an overhaul of semantics was necessary anyway. PR #71 would give a unified approach to semantics and content_qualifier.