Construction Market Gis Spatial Data Modeling And Realization

The storage of data of the traditional geographical information systems is base on the files.It astrict the development of geographical information systems because of the abuses of the badness about data scatter, data redundancy, data consistency and data validity which is brought by files storage and the feebleness of share mechanism about concurrent operations by multiuser.It is so better mature in data administration on the text type but inability on spatial data which is with complex architecture, data quantity bulkilness and topology relation.After 1990's. with the development of database technology and maturation of Object Oriented Programming , the manufacturer of relational database which include Oracle , Sybase , DB2 etc. added the Object-Orientd characteristic through extending abstract data type base on relational database and Spatial Query Language, and develop into Orientd-Relational database systems.It is through storage of data on the Spatial of Oracle 9i database systems to implement the highly one on Spatial information and property information and to implement speediness demand , complex space analysis and decision-making endorsement based on magnanimity data..This paper is based on the background mentioned above, discusses the spatial characteristic of Oracle 9i including the high one storage mechanism about spatial data and property data , the high efficiency index mechanism of Oracle, the powerful spatial analysis functor of Oracle and the spatial function of Oracle.and created the archictecture market spatial database base on elaborating on Orientd-Relational spatial database model, extended Spatial Query Language, spatial analysis and spatial index which is come on to by archictecture market GIS database. The paper is organized as follows:firstly, the research background of distributed spatial information service and the development condition of it are discussed, then is the study in which as follows:organization and administration on spatial data, the following discusses the spatial storage model and spatial index arithmetic, finally is the prototype design and implement of the archictecture market...