Study On Object-oriented Modeling Of The Spatial Database Of Fundamental Geographic Information

The spatial data is the core of the spatial database, how to store GIS data effectively has been the difficulty and focus of study for its unique characteristic. The spatial data model is the precondition and key to the design and realization of spatial database, to choose which kind of data model for storage and management of GIS data, how to model for spatial data and how to design for spatial database, how to make sure the integrality and consistency of geographic data and how to gain the high efficiency of the access to spatial database are all important questions that need to be solved during the system design.The spatial database of fundamental geographic information system is one of important parts of the National spatial data infrastructure (NSDI).It has been playing a very important role in the national economical and social development. To improve the organization and management of fundamental geographic spatial data, and to ensure the data can be utilized well, a relatively better data model must be applied for the design of the spatial database.Based on the above background, the course of development of GIS spatial data model was summarized at first. Through an analysis of the advantages and disadvantages of various GIS data models, it was inferred that there were many limitations of the current data organization of the spatial database of fundamental geographic information system. Then the paper probed into applying the object-oriented data model to the management of geographic data. Taked example for...