作者: Douglas B. Gerull , David M. Glenn
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摘要: Dynamic segmentation of Geographical Information System (GIS) map data, stored in a relational database, converts linear-feature fixed-length attribute arrays, as columns table, into variable length and location arrays for inclusion an object-oriented database which can be scanned candidate values the meeting certain search criteria. Selection is provided for. The may queried to return regions, specified region coordinates, each corresponding selected values. intersection found regions with from value thereby determined.