5ARC/INFO.ArcSDE the Universal Spatial Sever for ARC/INFO[N].中国计算机报,1998-09-17.
6ERSI.Managing ArcSDE Services[M].ERSI,2002
7Zhao J,Cheng L,Hsing K.Graph indexing for spatial data traversal in road map databases[J].Computers and Operations Research,2001,(3):223～241.
8Laxton J L,Becken K.The design and implementation of a spatial database for the production of geological maps[J].Computers & Geosciences,1996,(4):723～726.
