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通过与POLYVRT模型的比较,该文系统地分析了MAP INFO 的空间数据模型.在此基础上,对MAPINFO 的数据组织方法和索引机制加以深入探讨“,”This paper analyses systematically the spacial-data-model of MapInfo in comparison with the POLYVRT model, and then discusses the data organizing method and indexing mechanism of MapInfo in depth.