= '''Reference Data Services''' =
PCA provides services for Reference Data according to the ISO 15926 standard "Industrial automation systems and integration—Integration of life-cycle data for process plants including oil and gas production facilities". 

The Reference Data Services include development, maintenance and publication of reference data. This is done in closed collaboration with the industry. 

PCA’s Reference Data is published in PCA’s Reference Data Libraries where access is provided under the terms of the PCA Articles of Association, namely "Reference Data Libraries shall be open, i.e. they can be used by everyone for their own purpose, on equal terms." 

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Service Requests for RDS System Support and/or RDL Content Support are provided for registered users.
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Currently PCA publishes two types of Reference Data Libraries, with a different underlying way of representing information
 1. [https://rds.posccaesar.org/ The "READI/NOAKA" library] is built as a set of ontologies, applying the W3C standard OWL 2 and ISO 15926-14, offering full reasoning capabilities of the ontologies
 2. [https://www.posccaesar.org/wiki/Rds/Endpoints The "PCA RDLs"] are two RDLs - one applying ISO 15926-2 and one applying ISO 15926-12 also called “ISO 15926 OWL 2 native”


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'''Exploit the Reference Data Services now!'''

[https://www.posccaesar.org/wiki/Rds/Endpoints Endpoints][[BR]]

[https://www.posccaesar.org/wiki/Rds/Downloads Downloads][[BR]]

[https://www.posccaesar.org/wiki/Rds/ForDevelopers For Developers][[BR]]

'''User registration and operation supports'''
[http://rdssupport.posccaesar.org/wiki/ Click here]

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