The UMB-CDB System 1
Abstract:
UMB-CDB is a constraint database (CDB) [KKR95] system for spatiotemporal data. Constraint databases are an extension of the relational database model, enriching both the data model and the query primitives with constraints. UMB-CDB is built from the ground up in Java, using Constraint Query Algebra (CQA) [GK96] for internal query representation and evaluation. Data entry options include importing GIS data in E00 format, e.g. from Arc/View or GRASS, as well as direct entry via an interactive data viewer/editor. Data is displayed back to the user via the same interface; a visual display option is planned for the near future. UMB-CDB is targeted to users of traditional relational databases that are extended with nontraditional (spatiotemporal) data, as well as to users of Geographic Information Systems (GIS) that are extended with traditional (administrative) data querying capabilities. Unlike current commercial solutions for similar applications, UMB/CDB provides a homogenous interface and a single internal query and data representation for handling both types of data. 1
Citations
| 133 | Indexing for data models with constraints and classes – Kanellakis, Ramaswamy, et al. - 1996 |
| 70 | The DEDALE System for Complex Spatial Queries – Grumbach, Rigaux, et al. - 1998 |
| 22 | Constraint query algebras – Goldin, Kanellakis |
| 1 | Arc/Info Export Format Analysis – Morissette |
| 1 | The MLPQ/GIS Constraint Database System – al - 2000 |
