Minutes of DAL session, 07-Oct-2005, ESAC Chair: Doug Tody Minutes: Markus Dolensky slides are attached to http://www.ivoa.net/twiki/bin/view/IVOA/InterOpOct2005DAL Doug Tody discusses status of SSA query interface: - discussion about the need for creation types, especially atlas vs pointed was questioned - to clarify: is an empty query valid? - add optional query parameter for object name (e.g. spectra of Mars) - Pat Dowler: provide a method to find 'increments' of a data collection: e.g. by looking up modification times of data sets - Harry Enke: inquires about general service capabilities (max. records) or one time errors (service unavailable). => part of this is covered through registry (like max records to return) and part of it should/is dealt with in Web Service specification Jonathan McDowell presents status of data model effort for SSA - discussion of UML diagram and definition of segments and whether time series and spectra require distinct sets of meta data Francois Bonnarel on comparing SSA interface vs. characterization DM: - there is good consistency concering input parameters, but query response has got several discrepancies to resolve; Jonathan takes action to review DM Jesus Salgado presents status of Simple Line Access Protocol - comment: provide way to query for forbidden lines only - comment: atmospheric lines vs. vacuum lines; one way to avoid conversion is to allow to specifying frequency instead of wavelength Doug about SIA V1.1 Francois B. gives talk on various SIA issues V1.0 & 1.1 incl. extension mechanism Francesco Pierfederici gives demo on WCS augmented graphics and instrumental footprint service Doug introduces a Java library that implements a DAL client - this was done in context of the NVO summer school 2005 **************************************************** renewed action items from Kyoto meeting: - A. Preite Martinez: suggest alternative query input parameter names to prevent ambiguities like in optional query param 'Aperture'. - SSA interface doc authors: sort out naming and exact meaning of CREATORID, PUBID new action items: - Francoise Genova: Define valid range of values for query parameter TARGETCLASS as deliverable of Semantics group => Francoise + Andrea suggest to start from http://simbad.u-strasbg.fr/guide/chF.htx - everybody interested in finalizing data model issues is invited to contact Jonathan McDowell - Jonathan will review spectrum DM doc. based on Francois et al.'s analysis - Pedro to circulate the SLAP document to DAL within the coming days (10/2005)