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SCHAC implementation and related issues

SCHAC implementation and related issues. EuroCAMP 18-19.10.2006 Mikael Linden CSC, the Finnish IT Center for Science. Outline. What is a schema The schema onion eduPerson schema Schac schema and attributes Examples of national schemas and attributes. Schema.

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SCHAC implementation and related issues

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  1. SCHAC implementation and related issues EuroCAMP 18-19.10.2006 Mikael Linden CSC, the Finnish IT Center for Science

  2. Outline • What is a schema • The schema onion • eduPerson schema • Schac schema and attributes • Examples of national schemas and attributes

  3. Schema • Schema = the syntax and semantics for attributes exchanged • for example, between the IdPs and SPs in a federation • Semantics and vocabularies: the tricky part… • what does ’student’ mean? • what does ’ university’ mean? • ...in the institutional level? • … in the national level? • … in the international/European level? • For cross-national attribute exchange, there’s little use of having common attribute syntax and vocabulary, if the semantics of the vocabulary are different • for example, ’student’ means a degree student in Finland, and any kind of student in some other country

  4. The schema onion institutional schemas national schemas Schac eduPerson Common schemas (Person, OrgPerson, InetOrgPerson)

  5. eduPerson • widely used in higher education around the world • by Educause • www.educause.edu/eduperson • latest version 200604 • 10 attributes for higher education, such as • For authorization: eduPersonAffiliation (+primary/scoped affiliation) eduPersonEntitlementurn:mace:dir:entitlement:common-lib-terms for library contents • For unique identification of the end user: eduPersonPrincipalNameeduPersonTargetedID

  6. Loose definition of ePAffiliation vocabulary

  7. Schac, Schema for academia • by Terena TF-EMC2 • first schema definition released 5/2006 • http://www.terena.nl/activities/tf-emc2/schac.html • defines 18 attributes • adopted partly in • Haka federation/Finland (funetEduPerson) • FEIDE federation/Norway (norEduPerson) • DK-AAI pilot federation/Denmark • Uma.es • …

  8. Schac attributes (1/5) • schacDateOfBirth • for example: 19660412 • schacPlaceOfBirth • for example: Algeciras, Spain • schacSn1, schacSn2 • for example, Lopez de la Moraleda • schacPersonalTitle • for example, Prof • schacUserPrecenseID • URIs, for example sip:pepe@myweb.com • schacExpiryDate • for example: 20051231125959Z • schacUserPrivateAttribute • for example, mail, telephoneNumber

  9. Schac attributes (2/5) • schacMotherTongue – ISO 639 • for example, fr, es-ES • schacGender – ISO 5218 • 1=male, 2=female, 0=not known, 9 = not specified • schacCountryOfCitizenship – ISO 3166 • for example, es • schacHomeOrganization – domain names • for example, tut.fi • schacCountryOfRecidence – ISO 3166 • for example, es • schacPersonalPosition • schacUserStatus

  10. Schac attributes (3/5):schacHomeOrganizationType • Purpose: authorization of cross-national services • For example, ”for higher education students in any EU country” • Proposed international/EU vocabulary PREFIX=urn:mace:terena.org:schac:homeOrganizationType • PREFIX:eu:higherEducationInstitution // HE defined by Bologna • PREFIX:eu:educationInstitution // other educational institutions • PREFIX:eu:NREN // NREN defined by TERENA • PREFIX:eu:universityHospital • PREFIX:eu:NRENAffiliate // organisations part of the NREN constituency • National extensions, for example in Finland • PREFIX:fi:university, PREFIX:fi:polytechnic, PREFIX:fi:researchInstitution, PREFIX:fi:other • Terena gathers links to national ”homepages” • http://www.terena.nl/registry/terena.org/schac/homeorgtype/

  11. Schac attributes (4/5):schacPersonalUniqueID • National identification number/social security number • assigned by national governments, each country (except Germany) has at least one • considered as sensitive in many countries (strong identifier) • each NREN maintains the national namespace, for example the Finnish Identification Number • urn:mace:terena.org:schac:personalUniqueID:fi:FIC:010161-123K • Terena gathers links to national ”homepages”:http://www.terena.nl/registry/terena.org/schac/personalUniqueID/

  12. Schac attributes (5/5):schacPersonalUniqueCode • Local (=not government-assigned) identification codes • Student number, Library patron number, etc • Notice: employeeNumber is already defined by InetOrgPerson • One international namespace proposed for a student number • to make student numbers understood between countries • urn:mace:terena.org:schac:personalUniqueCode:eu:studentID:‹tld›:‹code› • for example, urn:mace:terena.org:schac:personalUniqueCode:eu:studentID:tut.fi:159345 • for other local identifiers, each NREN maintains the national namespace • Terena gathers links to national ”homepages”:http://www.terena.nl/registry/terena.org/schac/personalUniqueCode/

  13. National and institutional schemas • National and institutional schemas supplement international schemas with national and local specialties • For example, funetEduPerson (Finland), norEduPerson (Norway), swissEduPerson…

  14. Examples of national attributes • funetEduPersonStudentCategory, the controlled vocabulary • bachelor • master • Licentiate degree students • doctor • other-degree • visiting-student a student of another Finnish univ • exchange-student a student of a foreign univ • qualifying-studies aiming at further qualifications • further-education further education courses • open-university open university • other

  15. Examples of national attributes funetEduPersonTargetDegree • vocabulary: national codes maintained by the statistical center of Finland • for example, doctor of theology urn:mace:funet.fi:attribute-def:funetEduPersonTargetDegree:university:311 funetEduPersonECTS • ECTS credit units a student has funetEduPersonEPPNTimeStamp • The date when the eduPersonPrincipalName values was issued to this individual • The Finnish way to tackle reassignment of EPPN • syntax YYYYMMDD

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