Design And Application Of Spatial Database Based On Hypertable

The storage of spatial data is the organizational foundation for the GIS system. To a large extent, the access efficiency of spatial data influences the efficiency of the GIS system. At present the storage of spatial data is mostly based on two methods:one kind is that saving spatial data in relational database with the help of spatial database engine, and the other is saving spatial data in a particular format file using the file system for management. But these two kinds of storage scheme also have certain disadvantages:spatial database engine stores data in a relational database which is insufficient in dealing with massive spatial data, and storage structure is not flexible enough; Space data in file format is trival in manipulation, and spatial data stored in a file also cause disunity of data management.In view of the shortages of the above two kinds of storage scheme, this paper introduced the Hypertable database to store spatial data. Hypertable, which is designed based on Bigtable, is a kind of unrelational distributed database, supporting key-value data model. This paper does detailed design to the spatial database based on Hypertable, and applies it to actual project. Based on the experimental results, the performance evaluation is made in comparison with the two storage scheme above. The main work is as follows:1) Research on two kinds of usual spatial data storage scheme. Do research in Oracle Spatial and NetCDF format, and do performance test in project implementation.2) Spatial database design based on Hypertable. Do further research in the characteristics of Hypertable database and the establishment of space index in Hypertable.3) Design and implementation of meteorological information dynamic display system. Do detailed design and implementation for the dynamic display system, and add airline safety assessment module in this system.