期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2000
卷号：XXXIII Part B4 (/1-3)
页码：1252-1256
出版社：Copernicus Publications
摘要：In this paper, two cases of data consistency problems are discussed in Multi-user Geographical Information System. When a user updates some spatial data that have been accessed by other users in database, or execute an undo/redo operation, data consistency probably will be destroyed. To solve the problem caused by the first case, a "Notification- Reread Method" is introduced. As for the second case, there are many problems to be studied
关键词：Data Sharing; Data Consistency; Lock; Undo/Redo Transaction; Notification-Reread Method
