Changes between Initial Version and Version 1 of 1q2007


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Timestamp:
Apr 2, 2007 1:09:56 PM (12 years ago)
Author:
ticheler
Comment:

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  • 1q2007

    v1 v1  
     1= Update on developments in the first Quarter of 2007 =
     2
     3Work has been concentrated on a couple of aspects of the project lately. They are:
     4
     5* Development of GeoNetwork opensource version 2.1 resulting in beta releases
     6* Upgrading of the [http://geonetwork-opensource.org Community website]
     7* Work related to the OSGEO incubation process
     8
     9== Development of version 2.1 ==
     10
     11A lot of development has been going over the last 9 months. Many new functions have been added and existing ones have been enhanced. The plan is to release a final version 2.1 of the catalog software towards the end of April 2007. Here's a summary of what has been developed for this release:
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     13* Support for the ISO-19115 metadata standard, formatted and validated against the ISO-19139 implementation schema.
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     15The ISO19115-19139 standards seem to confuse many, many people. Here's a short attempt to clarify the situation :-)
     16There is only one (1!) metadata standard for geographic data, and that is the ISO-19115 metadata standard. The ISO-19115 standard was originally released without a DTD or XML schema that could be used to validate such a metadata record (formatted as an XML document). It was decided by ISO TC211 to develop a specific implementation standard, called ISO-19139. This standard would have the form of a metadata scheme (an XSD document). The schema can be used to validate the structure of an ISO-19115 document. It has taken a long time for a good 19139 schema to be released. A final schema is still not available to date (04-2007).
     17
     18To confuse things more, many software started implementing different versions of the ISO-19115 standard :( The GeoNetwork development team decided back in 2002 to use the Draft International Standard version of ISO-19115 (ISO-19115:DIS). This version of the standard (not yet standard at that point) provided a DTD and was as such the only version that could have a formal checking of its structure. GeoNetwork used (and still supports) short element names in its XML representation.
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     20For GeoNetwork 2.1 we have now created a migration procedure to convert the ISO-19115:DIS formatted metadata into a structure that complies with the formal ISO-19115:2003 standard and that validates against the ISO-19139 schema version 0.6