Preliminary Research on the Service System for National Important Mining Zone Database

The server system for national important mining zone database(NIMZD) contains a technical server and a data server.For the technical server,the paper classifies the data cutting types according to the character of NIMZD and solves the problem of information losing when loading data and translating the data format,making two fields respectively storage the element information and topology information.At last,with the help of the RDBMS and spatial data engine(SDE),both attribute data and spatial data are managed in the same system and achieved by the query of those data.As for data server,the paper points out that combing the WebGIS,metadata and compact disc server,can not only fulfill the user demands but also guarantee the security of those data.The paper also classifies the data grade and user grade,and provides some strategies for data security.