The ELISE action is still improving the Re3gistry software and has supported the preparation of the study and the implementation of the “Federation of registries”, a missing item in the software market.
The Register federation tool allow registering extensions and other externally governed references codes so that they can be traced and reused by a bigger audience.
The tool is technologically neutral as it allows reference codes deployed by any system been retrievable in the system .
The only requirement for the extensions to be in the system is to comply with the RoR specifications.

Features
- It is fully compatible with the Re3gistry (v2 onwards) that provides on-demand RoR descriptor formats.
- Descriptors files provide metadata and data about the registries and registers and their relationships to be included in the federation in an RDF/XML document.
- The tool allows searching in the different registers and the items contained in them.
- The RoR can be accessed using the graphical user interface and/or API.
- This tool helps to put together information from reference code systems without impacting their technical setting. Only a common descriptor file is needed to be exchanged.
- The upcoming European Data ecosystems could benefit from this type of cross-cutting technologies to connect them at a semantical level.
RoR descriptor file
RoR stands for Register of Registers.
This specification is based on:
- The W3C Data Catalog vocabulary (DCAT) is used to model entity registry (dcat:Catalog).
- The W3C Simple Knowledge Organization System (SKOS) is used to model entity register (skos:ConceptScheme) and item (skos:Concept).
More info on the RoR can be found here.
Background
The Register Federation tool was born as a testbed to put together national extensions of INSPIRE data models in a single place to assure the sharing of codes for a better understanding of the semantics when using data
The testbed comprises:
- the tool,
- best practice document and,
- conformance classes for the RoR Descriptor files.
You can play with the tesbed supporting the INSPIRE implementations that require code list extensions: