The role-based user management and the multi-version mechanism were used to support collaborative ontology development of users.
它们分别采用基于角色的用户管理和多版本机制来支持多用户协同的本体开发；
Based on the idea of Role-Based Access Control, this paper presents a user-privilege management method using VJ, which is advantageous for its simplicity, flexibility and security.
借鉴基于角色的访问控制基本思想，结合开发实践，提出了一种用VJ实现用户权限管理的方法。
In order to do this, the suite delivers powerful analytic, collaboration, modeling, and information management capabilities through a simple role-based web-user interface and modeling tools.
透过这些，可以将解析、协力、模式化、信息管理等强大的工具，做为简单的用户介面。
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