SQL数据库的相关内容

文章 2009-01-21 来自：开发者社区

Linq to Sql中Single写法不当可能引起的数据库查询性能低下

场景:需要从T_User表中返回指字条件的某条记录的某一个字段在Linq中有二种理论上都行得通的写法，见下面的代码: CodeCode highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->using (dbUserDataContext ...

文章 2008-12-27 来自：开发者社区

保护SQL Server 2000数据库安全配置的十七招

SQL Server 数据库在企业中的应用越来越多，安全性显得越来越突出。特别是最近一段时间以来，一种新的网络攻击技术开始在Internet上快速流行，那就是“SQL Injection”，俗称“脚本注入式攻击”，只要被不法分子盯上的系统，恰好您使用的数据库是SQL Server 2000...

文章 2008-12-26 来自：开发者社区

替换SQL Server数据库中所有表的所有字段的某些内容

  方法一： Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->exec   sp_msforeachtable   @command1=N'   ...

文章 2008-12-18 来自：开发者社区

什么是数据库分区？数据库分区是一种对表的横向分割，Sql server 2005企业版和之后的Sql server版本才提供这种技术，这种对表的横向分割不同于2000中的表分割，它对访问用户是透明的，用户并不会感觉的表被横向分割了。（2000中的表横向分割是建n个表例如按时间建表每月一个表，表名不同，最后需要做一个大视图）关于具体的如何做分区，请参考数据库分区演练http://www.cnbl....

文章 2008-11-08 来自：开发者社区

ORACLE 创建DBlink访问SQL SERVER数据库

Oracle中使用透明网关链接到Sqlserver 在最近项目中需要从Oracle中访问SQL Server数据库, 自然想到了透明网关. 因为Oracle数据库是Linux上的, 而Linux上的Oracle9i不包括连接到SQL Server的透明网关.就在一台单独的Windows服务器上安装了透明网关用做Oracle访问SQL Server的桥梁. 环境如下： Oracle D...

文章 2008-09-20 来自：开发者社区

SQL Server数据库重命名、数据导出等若干问题

第一个问题是重命名数据库问题：在企业管理器中是无法直接对数据库重命名的，只能在查询分析器中操作 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> create proc killspid (@d...

文章 2008-09-14 来自：开发者社区

在asp.net中操作sql server数据库的一些小技巧

1.给数据库语句参数传递向数据库操作语句传递参数可以通过存储过程实现，这里给出另外两种简便易捷的方法：可以在C#中通过字符串操作将参数直接传入SQL语句变量中，例如： strings="Davolio"; stringsql="select*fromemployeeswhereLastName="+"'"+s+"'" 相当于写入SQL语句： select*fromemployeeswhere....

文章 2008-09-14 来自：开发者社区

为ASP.NET封装的SQL数据库访问类

usingSystem;usingSystem.Configuration;usingSystem.Data;usingSystem.Data.SqlClient;usingSystem.Collections;namespaceMyCorporation.DepartMent.DataBase{///<summary>///通用数据库类///</summary>publ....

文章 2008-09-04 来自：开发者社区

SQL Server数据库性能优化

设计1个应用系统似乎并不难，但是要想使系统达到最优化的性能并不是一件容易的事。在开发工具、数据库设计、应用程序的结构、查询设计、接口选择等方面有多种选择，这取决于特定的应用需求以及开发队伍的技能。本文以SQL Server为例，从后台数据库的角度讨论应用程序性能优化技巧，并且给出了一些有益的建议。　　1　数据库设计　　要在良好的SQL Server方案中实现最优的性能，最关键的是要有1个很好....

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云数据库SQL Server，具有企业许可授权，权限更为开放，引擎功能更为强大。能完美支持Windows平台的.NET架构，支持复杂SQL查询，性能优秀，并有强大的可视化管理工具，帮助您轻松管理数据。

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