The Application of Triggers in the Development of Large Information Management System
Min Wang · Neimenggu Shi-da xuebao. Zhexue shehui kexue hanwen ban · 2011
In order to strengthen the integrity and security of the database,According to the phenomenon of data be malicious distortion in the development and practical application of large information management system,trigger can be used to update data cascading,retaining the tracks of modifying data and operation permissions of data.Designed and implemented a new type of trigger,can construct a layer of protection mechanism before the data could be modified or in the process of modification,which could change the situation of data recovery after the data was altered.The implementation of the above methods and program code is exemplified by student registration management database.