You may require that certain text fields not be zero - length , that a field be formatted as a phone number or other type of well - formed data , or that a string not contain any unsafe characters that could be used to compromise the security of a database 可能需要让某些文本字段的长度不为零，或者让字段的格式设置为电话号码或其他类型的格式良好的数据，或者让字符串不包含任何可以用来破坏数据库安全性的不安全字符。
In the light of the main factors influencing the safe broadcasting of digital audio workstation system , this paper advances some measures from aspects of dual server ' s fault - tolerant technology , raids , security of operating system and database , security of exchanger , and calibrating technique for time , etc 针对影响数字音频工作站系统安全播出的主要因素,从服务器双机容错技术、冗余磁盘阵列、操作系统及数据库安全性、交换机的安全性、时间的校准技术等方面提出了措施。
The thesis mainly resolved the database security issue , the ldap ’ s accessing mechanism and the problem of how jndi ( java naming and directory interface ) connects to the ldap server , etc . the thesis tested the performance of the computing pool with the power system flow parallel computing problem , and compared the performance of the computing with and without the computing pool management 论文在设计过程中主要解决了涉及到的数据库安全性问题、 ldap的访问机制问题以及jndi ( javanaminganddirectoryinterface )如何连接ldap服务器的问题等。论文在计算池中运行电力系统潮流并行计算来测试计算池的性能,并与未经过计算池管理的潮流并行计算进行了比较。
Many former systems like this is purely according to c / s mode , but this system is base on the combine of c / s and b / s , and the same time , the high speed network technique of today is used , therefore the function of this system is more perfect ; the constructions of each departments of this system about database are discussed ( include mold construction , the table construction of database etc . ) , the key techniques of database ( stored process , trigger and the safety technique ) , the safety design of database , the safety design of program etc . , and the establishing of data warehouse of customer is introduced , and a technique about graph of customer data warehouse ( realized with powerbuilder ) ; the design of network construction is briefly discussed ; the choice of servers is introduced in detail ( include the database server and the the web server ) 以往的此类系统大多单纯基于c / s模式设计，而本系统是两种模式的结合，充分利用当今高速发展的网络技术，所以功能更加完善和强大；数据库技术方面详细介绍了各分系统的功能模块设计（包括模块结构、数据库表结构设计等） 、后台数据库的关键技术（存储过程、触发器和数据库的安全技术） 、数据库安全性设计（采用双机容错解决方案） 、程序安全性设计和权限配置等，同时介绍了客户数据仓库的建立方案和客户数据仓库的一种可视化技术（用pb和sybase的工具来实现） ；简要介绍了系统的网络结构设计过程；详细介绍了服务器的选择和选择结果（包括数据库服务器和web服务器） 。
