We develop a technique workflow of extraction and implementation of change- on2 ly information based on version databases, we take road features as an example to analyze the change types of realistic entities, discuss the object matching method in the process of ex2 traction of change- only information. Finally, we give the definitions of change- only infor2 mation and the updating mechanism of user. s database based on change- only information

版本数据库中基于目标匹配的变化信息提取与数据更新1.pdf

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