【摘要】 Mapinfo是流行的地理信息系统，长线图形系统是在Mapinfo的基础上开发的分布式图形信息系统，用于全国电总-省-市级电信线路的图形化管理。介绍了图形数据分布、DDB的数据一致性、图形数据交换的设计和实现技术。更多还原

【Abstract】 Mapinfo is a popular Geography Information System, Telecommunication Line Graphics System is a distributed graphicsinformation system based on Mapinfo, used to graphically manage the telecommunication lines of all over the country in three levels whichare telecommunication-bureau-gereral/province/city. In addition to the design and implemen tation of graphics information exchanging, thedistributinn of graphics data and data consistency about DDB are discussed更多还原