OGC(r) schema USAGE.txt ----------------------------------------------------------------------- More information on OGC standards may be found at http://www.ogc.org/standards/ The most current schema are available at http://schemas.opengis.net/ . ----------------------------------------------------------------------- -- [ USAGE NOTES ] -------------------------------------------------- One reliable and flexible way to use schemas [1] is to download them [2] locally and use them with an OASIS XML Catalog [3] (ex. [4]). In this way the HTTP server is not contacted each time the schema is used. A benefit of this option is that local client can use the schema even when offline or when the schema website is offline. 1) http://schemas.opengis.net/ 2) http://schemas.opengis.net/SCHEMAS_OPENGIS_NET.zip 3) https://www.oasis-open.org/committees/download.php/14809/xml-catalogs.html 4) http://beta.schemas.opengis.net/catalog.xml OGC's services strive to achieve higher than 99.95% uptime [5] but there is no guarantee. 5) https://uptime.is/99.95 The most current OGC schemas are available at http://schemas.opengis.net/ [1]. They are packaged into a zip archive [2] as well as a Tar.GZ archive when any schema is changed. Public notice is given via RSS [6]. 6) http://schemas.opengis.net/ogc_schema_updates.rss -- 2020-01-16 Kevin Stegemoller OGC schemas.opengis.net [7] now supports HTTPS and will continue to support HTTP to preserve the historic material previously published. OGC has enabled Upgrade Insecure Requests [8] to allow the client to choose to upgrade to HTTPS based on the Upgrade-Insecure-Requests header. 7) http://schemas.opengis.net 8) http://www.w3.org/TR/upgrade-insecure-requests There are no plans at this time to enforce server redirection of all HTTP requests to HTTPS. This decision will allow older software, which might only support HTTP and cannot be upgraded, to continue to function while modern clients will be able to upgrade to a secure connection if they support the Upgrade-Insecure-Requests header. Do note that this change has no effect on namespaces. The actual namespace will continue to use HTTP, even if it is also served through HTTPS. This applies as well for XMI DTD, Schema, and SGML DTDs resources. -- 2022-06-20 Kevin Stegemoller ----------------------------------------------------------------------- Policies, Procedures, Terms, and Conditions of OGC(r) are available http://www.ogc.org/ogc/legal/ . Copyright (c) 2022 Open Geospatial Consortium. -----------------------------------------------------------------------