| The working plan for development of "Global Mineral Resources Information Database and its Application and Management System"(GMRIDAMS) and framework of this system were ascertained based on a systematic investigation on the relevant databases at home and abroad. This system is composed of four levels, i.e., globe, continent, country, and major metallogenic belt levels, with information of geography, geology, mineral resources and working degree of geological investigation on each level. More than 120000 records of localities of ore deposits on super-large, large, medium, small and micro-sized scales in the world, combined with basic information of over 2300 mining companies as well as geographic and geologic information on global, continental and country levels have been collected and sorted out. This leads to establishment of a GMR database using Microsoft Access 2002 database management system and development of a GMR database application system including five class modules and three public modules by use of Visual Basic 6.0 and GIS component MapObjecrt 2.2. Following are major achievements obtained in this thesis. 1. A GMR database of our country has been established. 2. A GMR database application system has been developed. Through fuzzy inquiry, attribute inquiry, regional inquiry, and buffering area inquiry, this system offers inquiry and search of various information and data involved in the GMR database system, and provides different output results as photos, documents or paper printings. 3. A base of special symbols in forms of TrueType font composed this time makes it possible to show 168 mineral resources in the application system. Meanwhile, the strata codes and legend standard on global, continental, country and major metallogenic belt levels are proposed by referring to the international stratum standard set up by the International Stratum Committee. |
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