CJDB - A simple and efficient data model to store CityJSON in a database

A 3D city model uses three-dimensional geometries to represent and model urban environments, in which the building model is the key feature. With the development of computer and data collection technologies, 3D city models are gaining growing capacities regarding storing rich information. This makes 3D city models more potentially useful than...

A 3D data modeling approach for integrated management of below and above ground utility network features

Precise and comprehensive knowledge about 3D urban space, critical infrastructures, and below ground features is required for simulation and analysis in the fields of urban and environmental planning, city administration and disaster management. In order to facilitate these applications, geo-information about functional, semantic, and...

A new approach to managing data model and database co-evolution

This thesis presents a redesign of the operation-based approach to automating the coupled evolution of graphical data models and their data. In addition to its automated co-evolution support, the redesign also addresses the inherent limitations of the operation-based approach.