A database management program, a database management apparatus and a database management method can determine the sameness of shape data at high speed. The program causes a computer to execute a first edge line acquisition step that acquires the edge lines of the first shape data, an information registration...http://www.google.com.hk/patents/US7957595?utm_source=gb-gplus-share專利 US7957595 - Database management program, database management apparatus and database management method
