基于ORDB的空间数据协同修改研究与实现

Research and implementation about cooperative modification of spatial data base-on ORDB

借鉴数据库的并发机制和操作系统的临界区思想,提出“锁”机制-全局锁和局部锁来解决在多用户环境下、基于ORDB对空间数据修改时的一致性问题,并设计了相应的空间表结构来实现“锁”机制.

Use the simultaneous mechanism of database and the critical area of OS for reference, put forward a ＂lock＂ mechanism- the whole lock and the partial lock to solve the cinsistence during modifying spatial data base - on ORDB under multiple user environment, design the structure about spatial tables for the implementation of the ＂lock＂ mechanism.