Graphic Data Forming Redefinition Of CGIS Based On XML And Storing

Geographic Information is fair important information in our life and work which people often use it unconsciously. We have applied Geographic Information System (GIS) in construction trades, and it also will spread to other related information technology industries.GIS is technique in which computer technology is used to manage geographic information. The traditional Geographic Information Technology is based upon unique technique of software manufacturer, so various GIS software has its own file format, it raised obstacles to data share which has been a problem concerned by technology expert and politicians.In this respect, the thesis is devoted mainly to introduce eXtensible Markup Language (XML) technology into the construction of Coal Spatial Information System. XML originated from Standard Generalized Markup Language (SGML) is a kind of new technology, which remedies the defects of Hypertext Markup Language (HTML). It is generally acknowledged as next generation network language. What's more, it complies with the strict grammar rules and has good preserving value nature. In addition, the technology has an advantage that display is separated from contents. So XML is powerful for data management and network information transport.Document Type Definition (DTD) should be defined before building Coal Spatial Information System based on XML. This paper analyses data type of Coal Spatial Information System, then defines a series of DTD. XML documents will not be delivered through some displaying forms like screen unless other utilities are used. SVG, based on XML, is a language of displaying vector graphs. Only the documents based on XML converted to SVG can the describing vector graphs be displayed in Browser.At the end of the thesis, storage based on SQL Server has been realized. The XML document has been stored into database acted as binary large object, in order to transport in network expediently. ...