ISO INTERNATIONAL STANDARD 19112 Second edition 2019-02 Geographic information Spatial referencing by geographic identifiers Information géographique - Systeme de references spatiales par identificateursgéographiques Reference number IS0 19112:2019(E) so @IS02019 IS0 19112:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Fax: +41 22 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved IS0 19112:2019(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms, definitions and notation ..1 3.1 Terms and definitions .1 3.2 Conceptual schema notation. .2 4 Conformance. .2 4.1 General .2 4.2 Spatial reference system using geographic identifiers conformance class .2 4.3 Gazetteer conformance class .3 5 Conceptual schema overview ..3 6 Requirements for spatial reference systems using geographic identifiers. .4 6.1 Spatial reference system using geographic identifiers. .4 6.2 Conceptual schema for spatial referencing using geographic identifiers 4 6.3 Object Type: SpatialReferenceSystemUsingGeographicldentifiers. ..5 6.4 Object Type: LocationClass. .. 6 7 Requirements for a gazetteer .7 7.1 Overview .7 7.2 Conceptual schema for gazetteers .7 7.3 Object Type: Gazetteer .9 7.4 Object Type: Location. 10 7.5 Object Type: Geographicldentifier .11 Annex A (normative) Abstract test suites. ..13 Annex B (informative) Example spatial reference systems using geographic identifiers ..14 Annex C (informative) Examples of gazetteer data ..16 Annex D (informative) Backward compatibility .17 Bibliography ..20 @ IS0 2019 - All rights reserved iii