jgg     2007 27 (6):  58-60    ISSN: 0412-1961  CN: 21-1139/TG

CONCEPTDESIGNMODELOFOBJECTORIENTED SPATIALDATABASEBASEDONPETRINET
LanXiaoji;HuChuan;XieXuyang;LongWenxing
1)CollegeofArchitectureandMappingofJiangxiUniversityofScienceandTechnology,Ganzhou 341000 2)DepartmentofTrafficEngineering,SichuanCollegeofArchitecturalTechnology,Deyang  618000
Received: 1900-01-01  Revised: 1900-01-01  Online: null
Supporting info
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