6 February 2008 Michel Grothe INSPIRE DT NS IR1 on Discovery Services

6 February 2008 INSPIRE DT NS IR1 on Discovery Service Agenda 1.INSPIRE directive and discovery services 2.INSPIRE IR1 discovery service; core and specific requirements 3.Motivation for the INSPIRE discovery service 4.Performance requirements 5.Open issue(s)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 1. INSPIRE discovery services (1)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 1. INSPIRE discovery services (2)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 1. INSPIRE discovery services (3) This ‘linking’ service is also offered in the context of a discovery service as a capability of the discovery service.

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 2. INSPIRE IR1 discovery service; Core requirements OGC CSW ISO 19115/19119 Application Profile v2.0.2 is the interface service specification for the INSPIRE Discovery Service Normative reference: OGC , CSW ISO AP, OGC™ Catalogue Services Specification ISO Metadata Application Profile for CSW 2.0, version 1.0 (2007)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 2. INSPIRE IR1 discovery service; Specific requirements on service capabilities related to article 12 CSW ISO AP operations CSW ISO AP operation requirements INSPIRE CSW ISO AP operation requirements OGC_Service.GetCapabiliti es mandatory CSW Discovery.DescribeRecord mandatory CSW Discovery.GetDomainmandatory CSW Discovery.GetRecords mandatory CSW Discovery.GetRecordById mandatory CSWT Manager.HarvestOptionalmandatory CSWT Manager.Transaction Optionalmandatory

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 3. Motivation for the OGC CSW ISO AP  Review existing catalogue standards for the spatial domain  SDIC/LMO reference material (analysis) of DT MD and DT NS  Metadata survey by JRC  Distributed catalogue pilot JRC (2006)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service Review existing catalogue standards Existing catalogue standards considered:  OGC Catalogue Service for the Web (CSW)  Z39.50 search and retrieval protocol  EbXML Registry Service  Universal Description, Discovery and Integration (UDDI)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service Reference material analysis on deployment of catalogue standards Clear perspective on use of DC and ISO 19115/19119 in metadata reference material of SDIC/LMOs (from DT MD) DT NS reference material of SDIC/LMOs show few references on use of catalogue service standards in Europe INSPIRE metadata survey by Novak & Cragia (2006)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service Metadata survey JRC (Novak & Graglia 2006)

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 4. Performance requirements Performance; The time for sending initial response to service request in normal situation shall be 3 seconds. This time includes sending discovery service errors or exceptions. For the Discovery Service, this time shall allow to send 250 Metadata records. Normal situation represents periods out of peak load. It is considered to be 90% of the time. Availability; The probability of the Discovery Service to be up shall by 99% of the time, no more than 15 minutes downtime per day during working hours. Capacity; The minimum number of simultaneous service requests served according to the performance requirement shall be 100 for the Discovery Service.

6 February 2008 INSPIRE DT NS IR1 on Discovery Service 5. Open issues (under discussion in DT NS) 1.Mapping INSPIRE search metadata elements to OGC CSW AP ISO 19115/19119 few INSPIRE metadata elements are not CSW AP ISO core queryables 2.Mapping INSPIRE search metadata elements to Dublin Core is under development by DT Metadata

6 February 2008 INSPIRE DT NS IR1 on Discovery Service Questions? Koningin Wilhelminalaan HN Amersfoort Postbus 508, 3800 AM Amersfoort + 31 (0)