3D City Database v3.0

                                   20.03.2014                          

"The award winning 3D City Database is a free 3D geo database to store, represent, and manage virtual 3D city models on top of a standard spatial relational database. The database model contains semantically rich, hierarchically structured, multi-scale urban objects facilitating complex GIS modeling and analysis tasks, far beyond visualization" (http://www.3dcitydb.net)

OpenSource under LGPL v3.0

2007 - 2008:

• v2.0 developed within the framework Europäische Fonds für regionale Entwicklung (EFRE II) the project Geodatenmanagement in der Berliner Verwaltung – Amtliches 3D-Stadtmodell für Berlin at Technsiche Universität Berlin (supported DBMS: Oracle)

2012:

• Oracle Spatial Excellence Award in the field 'Research and education'
• v2.0 ported towards PostgreSQL/PostGIS (http://opus.kobv.de/ubp/volltexte/2013/6365/)
  

• Cooperation agreement between TU Munich (new chair of T.H.Kolbe a.k.a. godfather of the 3DCityDB), virtualcitySYSTEMS and M.O.S.S. about the further development

• Steering committee between the three partners takes decisions on the future roadmap

Other standardization processes for data models concerning 3D buildings like IMGeo (NL), INSPIRE (EU), Adv-Profil (D) etc. are closely related to CityGML. And it's getting more and more...
By the way, CityGML an OGC standard. You know why?

Rich in semantics compared to other 3D formats. Objects know where they are and WHAT they are.

Hierarchical structure of features and 1 to 5 diffenrent levels of detail (LoD) for each feature. Applicable for many different scenarios in 3D city modelling.

Modular structure of thematic models. Thus users and developers might use only the parts they need. PLUS: The model is extendable via application domain extension (ADE).