Postgis

Open GIS Consortium, Inc. OpenGIS® Simple Features Specification For SQL Revision 1.1

OpenGIS Project Document 99-049 Release Date: May 5, 1999 WARNING: The Open GIS Consortium (OGC) releases this specification to the public without warranty. It is subject to change without notice. This specification is currently under active revision by the OGC Technical Committee Requests forclarification and/or revision can be made by contacting the OGC at revisions@opengis.org.

Copyright 1997, 1998, 1999 Environmental Systems Research Institute Copyright 1997, 1998, 1999 IBM Corporation Copyright 1997, 1998, 1999 Informix Software, Inc. Copyright 1997, 1998, 1999 MapInfo Corporation Copyright 1997, 1998, 1999 Oracle Corporation The companies listed above have granted the OpenGIS Consortium, Inc. (OGC) a nonexclusive, royalty-free, paid up, worldwide license to copy and distribute this document and to modify this document and distribute copies of the modified version. Each of the copyright holders list above has agreed that no person shall be deemed to have infringed the copyright, in the included material of any such copyright holder by reason of having usedthe specification set forth herein or having conformed any computer software to the specification. NOTICE The information contained in this document is subject to change without notice. The material in this document details an Open GIS Consortium specification in accordance with the license and notices set forth on this page. This document does not represent a commitment to implement anyportion of this specification in any company’s products. WHILE THE INFORMATION IN THIS PUBLICATION IS BELIEVED TO BE ACCURATE, THE OPEN GIS CONSORTIUM AND THE COMPANIES LISTED ABOVE MAKE NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. The Open GIS Consortium and the companieslist above shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. The copyright holders list above acknowledge that the Open GIS Consortium (acting itself or through its designees) is and shall at all times be the sole entity that may authorize developers, suppliers and sellers ofcomputer software to use certification marks, trademarks, or other special designations to indicate compliance with these materials. This document contains information, which is protected by copyright. All Rights Reserved. No part of this work covered by copyright herein may be reproduced or used in any form or by any meansgraphic, electronic, or mechanical, including photocopying,recording, taping, or information storage and retrieval systemswithout permission of the copyright owner. RESTRICTED RIGHTS LEGEND. Use, duplication, or disclosure by government is subject to restrictions as set forth in subdivision (c)(1)(ii) of the Right in Technical Data and Computer Software Clause at DFARS 252.227.7013 OpenGIS® is a trademark or registered trademark of Open GIS Consortium,Inc. in the United States and in other countries.

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PREFACE.................................................................................................................................... 0-1 0.1 0.2 0.3 0.4 0.5 SUBMITTING COMPANIES ........................................................................................................ 0-1 SUBMISSION CONTACTPOINTS ................................................................................................ 0-1 DOCUMENT CONVENTIONS ..................................................................................................... 0-2 REVISION HISTORY ................................................................................................................. 0-2 EDITORIAL NOTES...