Study on RBWF Access Control Mechanism Based on XML

Access Control in Information System is an important protection mechanism.It strengthens the restraint to the objects so that the legitimate subjects can visit what they want to visit but unauthorized users can not access data beyond his or her authority.So the access control is a very important technology in a multi-user and multi-object workflow management systems.If these access control rules are described by XML,the safity of the workflow in managing compound transactions and platform independence will be greatly enhanced.