ID: 169

BRAUD, Maïté; SINCLAIR, Pauline; SHARPE, Robert 


Maïté is one of the senior members of the TAS division (Tessella Archiving Solutions) and an expert in Digital Achiving and Long-Term Preservation. She worked as a developer during her first three year with Tessella before moving on to become a Project Manager.

As a developer and Project Manager, she has helped deliver long-term preservation solutions to many National and Regional Archives in the world: The Swiss Federal Archives, the National Archives of the Netherlands, the Federal Chancellery of Austria, the National Archives of Malaysia and the Rotterdam City Archives. Most of the delivered solutions were based on Tessella Digital Archiving product: SDB/Preservica.

She is also managing Tessella’s contribution to the European research project ENSURE which is dealing with long-term preservation of financial and eHealth data. As part of this project, Tessella has been developing a Linked Data Registry: a new generation of Technical Registry allowing synchronisation between registries.


Pauline has over 7 years experience in digital archiving, leading to her current role as a digital preservation consultant and business analyst for Tessella's archiving services division. Pauline has guided the UK Houses of Parliament on their digital preservation strategy, provided advice to the British Library on data migration and worked with the UK, Swiss, and Dutch national archives, the Wellcome Trust Library, and HSBC to develop their digital archives. She has worked on digital preservation market surveys for the Digital Preservation Coalition and for PLANETS (an EU-funded digital preservation project) and developed digital archiving tools and systems for four national archives.


Programme manager at Tessella with over twenty years experience providing successful IT solutions to complex technical and scientific problems.

In last decade managed a programme of innovative projects in the digital preservation domain including the development of Tessella’s on-site Safety Deposit Box and cloud-based Presevica solutions. This technology has enabled our customers to win awards and in 2011 won a Queens Award for Enterprise: Innovation.

Active member of scientific oversight committee on a number of European research projects.

Participant in international digital preservation metadata standards committee (PREMIS).


Linked Data Registry: A New Approach to Technical Registries

Brief summary:

Technical Registries are used to maintain definitions of the formats, format properties, software, migration pathways etc. needed to preserve content over the long term. We describe a new approach using linked data technology, which makes it easy for organisations to pull content from multiple, trusted sources, update it, and extend the data model.


There have been a number of initiatives to produce technical registries such as PRONOM, UDFR and the Planets Core Registry. However, they have been subject to two main criticisms: (1) the data models are fixed and difficult to extend, and (2) the governance of the information is not ideal. Typically, maintenance of registry information has been restricted to the host organisation, which may have restrictions on the investment it can make. Therefore, while other organisations have been free to use the registry they have been unable to add to or edit the information within it. Although the hosts have been receptive to requests for additions and change, this has still led to issues with timing or when organisations disagree about format definitions or use or interpret things in different ways.

This talk will describe a new approach developed by ENSURE, the Linked Data Registry (LDR), which is designed to solve these problems. LDR uses linked data technology, which allows the data model to be extended easily and flexibly, thus solving the first problem. Any organisation hosting an LDR instance is free to add and edit content and to extend the model. Additionally, if it publishes (a subset of) its content on the internet, then any other organisation can choose to retrieve some or all of the published information to add to its own LDR instance. This means a peer-to-peer network is established where each registry instance in the network chooses which other registry instances to trust for which content. This gives control to each individual organisation, since they are not dependent on any single source, but can choose to take different content from appropriate authoritative sources.

Scientific contribution:

There are a number of innovative elements in this paper:

It describes what is believed to be the first linked data technical registry that can be deployed widely, thereby allowing the creation of a network of information maintained by a diverse, collaborating community.

It establishes a synchronisation and governance model for this networkThis works on a peer-to-peer basis, which will be compared to and contrasted with other models.

Some interesting design compromises will be discussed: in particular the need to balance the ability to expand the data model easily against the need to make the data model’s entities easily viewable and editable by non-technical users.

This network of registries is being rolled in April, starting with Tessella’s SDB/Preservica customer base.  We anticipate being able to report on our initial practical experience of operating this network.


technical registry, linked data