地理标记语言的一体化索引方法研究(英文)     

张海涛  原立峰  姜杰 《地球空间信息科学学报》2009,12(4):251-256

Currently,the OGC GML(Geography Markup Language) specification has been the de facto standard for GIS data sharing and exchanging and spatial interoperation.Adopting nested association expression approach of XML data,GML data documents can store both spatial information and semantic relationship information of geographical elements.To improve the efficiency of path query on GML two type information,the paper describes a holistic index method for GML data,which we call EKR+(optimized R+-tree base on Extend R...  相似文献   

��ԭGML�ռ����ݿ�ϵͳ�о���ʵ��   总被引：1，自引：0，他引：1  

胡川  龙文星  兰小机 《大地测量与地球动力学》2009,29(5):132-137

GML??XML???????????е???????XML????????洢??????????????????????????GML?????????GML??????????????????????????????????????????????????GML??????????ж??壬?о????GML?????????洢?????????????????????????????????????????????????????????????????????????????????????洢???Ч??????  相似文献   

����GML�ռ����ݿ�Ŀ���ʽWebGIS�ؼ������о�     

兰小机  韩立钦 《大地测量与地球动力学》2009,29(4):120-123

???????????????????????????WebGIS?????????GML?????????????????????????GML????洢??GML??????????????????????????????Web?????????????????????????XSLT??????GML????????SVG?????????????????????????????????????????????????У??????????????????????????????  相似文献