Z-alert - new or modified ASDD metadata records: November 2002

Dataset descriptions that are new or modified this month are listed for each node. This table is regularly generated by automatically conducting the following temporal query at each search service:
metadata_date after 2002-10-31 AND metadata_date before 2002-12-01

The Australian Spatial Data Directory (ASDD) is a group of separate distributed nodes. Each node is a powerful search system managed by a data custodian. Each node is a collection of uniform dataset descriptions (ANZLIC metadata records). Each dataset description concisely describes a certain spatial dataset (a discreet package of location-based data). Each such record often provides links to further detail and may provide an interface to the actual data. You can now conduct searches via the main ASDD web gateway to discover these specific updated metadata records.

ACT Spatial Data Directory

Found 0 modified records

Australian Antarctic Data Centre

Error: No response from node, probably down

Australian Hydrographic Service - Product Metadata

Found 0 modified records

Australian Oceanographic Data Centre

Their server replied with Error Code: 114 -- Unsupported Use attribute - Unsupported Use Attribute: 1012

BRS and Australian Natural Resources Data Library (ANRDL)

Found 0 modified records

Bureau of Meteorology

Found 0 modified records

CSIRO Marine Research

Found 0 modified records

EA Environmental Data Directory (Green Pages)

Found 0 modified records

Geoscience Australia (formerly AGSO)

Found 0 modified records

Geoscience Australia - National Mapping Division (formerly AUSLIG)

Found 0 modified records

IndexGeo Pty Ltd - Eco Companion catalogue

Found 0 modified records

NSW Natural Resources Data Directory

Found 50 modified records
Listing all titles ...

NT Spatial Data Directory

Their server replied with Error Code: 114 -- Unsupported Use attribute -

Other Commonwealth Agencies (hosted by BRS)

Found 0 modified records

Qld Spatial Data (QSIIS)

Found 0 modified records

Queensland Department of Natural Resources and Mines Spatial Data

Found 0 modified records

South Australian Spatial Information Directory

Found 24 modified records
Listing all titles ...

Tasmanian Spatial Data Directory

Found 0 modified records

Victorian Spatial Data Directory

Found 0 modified records

WALIS Interragator-Aerial Photography

Found 0 modified records

WALIS Interragator-Bibliographic Data

Found 0 modified records

WALIS Interragator-Environmental Impact Statements

Found 0 modified records

WALIS Interragator-Natural Resource Monitoring

Found 0 modified records

WALIS Interragator-Spatial Data

Found 0 modified records

Summary: found a total of 74 new or updated records at 23 nodes.

Explanatory notes:

Warning: This application is a robot that contacts each node in turn and conducts the search. You may see problems with some of the remote search services, due to server configuration and data management issues. That is the responsibility of each distributed search node. All that we can do is to attempt to detect and explain these inter-operability issues.

A maximum of 50 record titles are listed from each node.

No response from node
- their Z39.50 search service could not be contacted (e.g. machine is off-line, server is not running, very busy server, network congestion) see Status of ASDD Nodes
Unsupported Use Attribute: 1012
- their Z39.50 search service is not configured to respond to searches using the "Metadata Date" attribute (metd=1012)
Cannot conduct search
- their Z39.50 search service failed to carry out the search
- the most probable causes are that they are using server software that is way out-of-date, or their server is poorly configured
Cannot present titles
- their Z39.50 search service failed to present the list of results
- the most probable causes are that they are using server software that is way out-of-date, or their server is poorly configured
Cannot connect
- our robot cannot connect to their server (there seems to be some drastic inter-operability problem)
Results are consistently zero hits, yet i know that there are modified records
- server configuration and data management issues - many possibilities
- e.g. their metadata records are not properly updated, see the "Metadata Date" field
- e.g. their metadata records have not been properly validated to ensure reliable structure and content
- e.g. their search server is poorly configured, and only partially responds to the date search
Other notes
- early in the month, the record counts could be zero of course (look at the date generated below)
- sorry, the distinction between Updated and New cannot be determined, as the ANZLIC metadata would need a "Metadata Revision Date" field and a "Metadata Publication Date" field, rather than a solitary "Metadata Date" field
- the history summaries prior to 2002-03 will have slightly skewed results, because they started being recorded on that date and were generated for the past (e.g. a document that was updated in 2001-09 and again in 2001-11 will only get recorded for the latter)
- news and notes about the Z-alert ASDD service
Who to contact about suspected problems
- the results of all searches depend on proper configuration of the remote search server by the data custodian
- See ASDD node descriptions for their contact details

Perhaps you want to build your own network service based upon automated use of the structured log and summary files that are generated by this service - please contact IndexGeo Pty Ltd.

www.indexgeo.net/zalert/
generated on 2002-11-30