Design and Implementation of Distributed Raster Spatial Database Engine
Renyi Liu · Geo-information Science · 2007
Raster spatial database engine(RasSDE) is a key technique to achieve distributed query and efficient management of massive rater data. An object-oriented raster spatial data organizing model is proposed. A distributed four-tired architecture of RasSDE is designed. Database services,application interface and appli-cation services are analyzed. Core component framework and its object classes of RasSDE are discussed. MAMS V2.0 system based on RasSDE is given. The main aims of the system are to realize the object-oriented raster spatial data organization,integrative massive spatial data management and distributed spatial data computing. The comparison experiments of disk read-write and network transmission synthesized capabilities between RasSDE and ArcSDE are performed. The results show that raster data network transmission efficiency of RasSDE is higher than that of ArcSDE,and RasSDE can satisfy the demand of massive raster spatial data transfers.