UML as a Schema Candidate for Graph Databases

A session at NoSQL matters 2012

  • Vincent Delfosse

Wednesday 30th May, 2012

4:00pm to 4:45pm (CET)

During the lifetime of a building, a huge quantity of information will be captured by multiple actors: owners, managers, users, architects, electricians, plumbers, etc. As most of this information is not shared between these persons, the same analysis, verifications or measurements have to be done multiple times. SpatioData is a research project aiming at the development of a collaborative platform to support the effective sharing of such diverse data.

In order to reach this ambitious goal, it is important to provide the users with devices suiting their needs (mobile or station) and interfaces adapted to their specific activities. These various client applications will communicate to a centralized database through WebServices exhibiting a common data model. The data model of such an application has to address many problems. Amongst those are:

  • Complexity of the data model to represent the different aspects of the buildings, their actors, and the activities of the actors.
  • Communicability, to ensure that developers willing to build client applications will understand and use the provided model in the same way.
  • Extensibility, to provide client-side developers with a mechanism to add their own data schemes in the database.
  • Flexibility, required in a research environment, where multiple questions are being co-resolved in parallel.

UML has been chosen for the representation of our data model, as it is a formalized and well-known format in the developers community. But instead of fully developing the data model, then implementing it and providing dedicated services to it, an original approach has been adopted, in the form of UML-oriented WebServices independent of any specific model. This solution has been built on top of a graph database (Neo4J) in a simple but powerful way, providing answers to the given problems above.

This communication will detail the complete system architecture and the process designed on top of it, to make sure thirdparty developers can take full advantage of this platform.

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Vincent Delfosse

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Time 4:00pm4:45pm CET

Date Wed 30th May 2012

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