*IVOA DAL WG Running Meeting #12 *Wednesday 8 September 2021 - 20:00 UTC - vconf Participants: (13) James Dempsey, Grégory Mantelet, Marco Molinaro, Mark Taylor, Pat Dowler, Laurent Michel, François Bonnarel, Ada Nebot, Renaud Savalle, Tess Jaffe, Brent Miszalski, Dave Morris, Jesus Salgado *Agenda: 1. Datalink WD Status 2. SSA minor protocol updates 3. ADQL-2.1 validation (lyonetia - https://github.com/ivoa/lyonetia) 4. Any other business *Datalink 1.1 WD Status Datalink needs to move to WD status - many changes already in master branch PR Datalink #51 - content_qualifier Linked to Issue #42: Attempt to solve the question of what is behind a link Proposed solution is to not change `content_type` but to add a new field: `content_qualifier` (or `product_type` - TBDiscussed) LM: why not using the full URI? (full terms with URI) PD: Having just the default dataproduct type wihtout a URI would likely result in undesirable usage so a full URI for all cases is preferable DM: +1 LM: +1 PD: we can't use `content_type` as it is already used ; then `content_qualifier` makes more sense as it stays close to the field `content_type` FB: let's keep the name `content_qualifier` PR Datalink #52 - Templating * Propose to postpone to next version Issue #51 * problem: in service descriptor, how to specify that a parameter is required or optional? * proposed solutions: 1/ use the DESCRIPTION (but this is generally designed for humans), 2/