Journal of Geo-information Science >
Environmental Datasets-oriented Spatial On-Line Analytical Processing System
Received date: 2012-10-15
Revised date: 2012-12-17
Online published: 2013-02-25
SOLAP is based on the spatial data warehouse and is a kind of on-line spatial data access and analysis for a specific problem. The premise of implementation of SOLAP is to solve the integration problems between the spatial data and non-spatial data in spatial data warehouse. First, the authors analyzed the advantages and disadvantages of the atomic level architectures and the bus architecture of data warehouse, and put forward the hybrid data warehouse architecture. We discussed the hybrid data warehouse architecture model, used the multilayer system artchitecture, and put forward a kind of environment datasets-oriented spatial OLAP system framework, including the production database layer, data warehouse layer (basic business database-subject database)-middleware layer and Business Intellegence (BI) comprehensive analysis layer as well. The production database layer is the basic database for supporting various operations in environmental protection. The data warehouse layer includes the basic business database and the subject data warehouse. The fusion middleware layer mainly includes BI server, Presentation Server and MapViewer Server, that is the B I business logic laye between the application layer and the data warehouse layer. The BI comprehensive analysis layer provides all kinds of query analysis through the interaction between the middleware layer and the data warehouse layer. Then, we analyzed the environmental data integration and spatial data warehouse modeling process, and achieved environmental attribute data integration, which used PowerDesinger 12.5 for data modeling, used Oracle 11g to build environmental spatial data warehouse, and used the Oracle Data Integrator tools. We analyzed and constructed the environmental data spatial dimension extension method and model, which extended the administrative divisions dimension table. We used the Oracle Spatial sdo_geometry abstract data type to realize spatial environment data storage, spatial data and data warehouse data integration storage. And, the integration problem was discussed between OLAP and GIS. The authors implemented the fully integration between OLAP and GIS which uses OBIEE as a OLAP tool, Oracle Mapviewer as GIS component. The GIS service and OLAP service were integrated at the Web server to provide a unified access interface. In the end, the environmental datasets SOLAP prototype system was implemented, which validated the SOLAP framework and the system model.
WU Qun-Yong, LIU Meng-Xin, LI Xi-Jie, CA Wang-Hua . Environmental Datasets-oriented Spatial On-Line Analytical Processing System[J]. Journal of Geo-information Science, 2013 , 15(1) : 90 -96 . DOI: 10.3724/SP.J.1047.2013.00090
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