==== API for Computers ====
Query the server with the query "select * where {?a ?b ?c} limit 10": http://data.posccaesar.org/rdl/?query=select%20*%20where%20{?a%20?b%20?c}%20limit%2010

Set the output as xml: http://data.posccaesar.org/rdl/?query=select%20*%20where%20{?a%20?b%20?c}%20limit%2010&output=xml You can choose:

 * output=xml
 * output=json
 * output=ttl

(ttl is only for CONSTRUCT or DESCRIBE queries)

===== Machine readable linked data pages =====
Example: http://data.posccaesar.org/data/rdl/RDS327239 or by HTTP 303 by appending ?output in the HTTP query string: http://data.posccaesar.org/rdl/RDS327239?output=ttl

You can choose:

 * output=xml
 * output=json
 * output=ttl

Or you can set the accept-header to:

 * application/xml
 * application/rdf+xml
 * application/ttl
 * application/json

The return data includes

 * <your uri> ?b ?c
 * ?d ?e <your uri>
 * ?d ?e ?f
 * ?f rdfs:label ?g



Download
Currently we are using Gitlab for managing the RDL. You can take a git clone of the repository.

Browse: http://gitlab.posccaesar.org/data-posccaesar-org/rdl/tree/master

Clone: http://gitlab.posccaesar.org/data-posccaesar-org/rdl.git


=== '''File-Downloads of PCA RDL Content''' ===
The PCA RDL Content is also available for public access and/or download in different formats:

'''OWL files''': http://rds.posccaesar.org/downloads/PCA-RDL.owl.zip contains the full PCA RDS content in an interim format. For more information on this format and ''other ISO15926 parts available in OWL formats'', see also https://www.posccaesar.org/wiki/ISO15926inOWL Note that namespace for RD items has changed in export file from http://rds.posccaesar.org/2008/06/OWL/RDL# to http://posccaesar.org/rdl/ since April 18. This corresponds to the content in the PCA RDL endpoint.

'''MS Access Database''': http://rds.posccaesar.org/downloads/PCA-RDL.mdb.zip contains the full PCA RDL content, including content not visible in the Java thin-client RDS Browser interface.

'''Spreadsheet Formats: '''The "initial set" of ISO15926-4 RD 2007 content remains accessible from ISO SC4. (See http://standards.iso.org/iso/15926/-4/) Updates to these and ISO processes for maintenance of standard reference data as databases are work in progress. Partial report download spreadsheet formats (and upload, see below) from the PCA RDS are also supportable. Please use Operations Support service requests for these.