A platform of network communications about mutimedia information and interfaces of the xml document processing are realized . following the xml criterions , a interactive protocal on tcp / ip is built . also , a management model of the users " power is put forward and implemented . what ' s more , a concurrency control algorithm based on node version is put forward and improved 系統實現了支持多媒體交互的網絡傳輸平臺;提出并實現了應用層消息轉發和組播算法;采用xml規范在tcp ip協議之上實現了系統的協作通信協議;提出并實現了系統的用戶和權限管理模型;實現了xml文檔處理的dom接口;提出并實現了基于版本序號的并發控制算法,并對算法進行了多方面改進;用xslt實現了課件的多樣性顯示和發布。
This paper analysis the shortage of traditional concurrency control method in multidatabase and brings froward a new concurrency control algorithm . we also bring forward a new recovery method for multidatabase : synthesis 2pc protocol , which combines many multidatabase recovery methods into one algorithm , and makes the algorithm more useful and more efficient 本文還提出了一種新的多庫系統恢復機制:綜合2pc協議,它把已有的幾種多庫系統恢復機制結合在一個算法中使用,使其更適于多庫系統的異構性,應用范圍更為廣泛,效果也更好。
This paper analyzes some key issues of cooperative editing system . and a concurrency control algorithm in a cooperative editing is introduced , which provides the stable and effective support for the cooperative editing system . it enhances flexibility , practicality and compatibility of the original cooperative editing system 本文分析研究了協同編輯器需要解決的一些關鍵問題,設計和實現了z - office中協同編輯處理模塊的并發控制算法,使協同編輯器具備了有效穩定的實時協同處理能力,并且提高了協同編輯器的靈活性、實用性和通用性。