SQL Table
Table-Naming Standards
Table-naming standards, as well as any standard within a business, are critical to
maintaining control. After studying the tables and data in the previous sections, you
probably noticed that each table’s suffix is _TBL. This is a naming standard selected
for use, such as what’s been used at various client sites. The _TBL simply tells you
that the object is a table; there are many different types of objects in a relational
database. For example, you will see that the suffix _INX is used to identify indexes
on tables in later hours. Naming standards exist almost exclusively for overall
organization and assist immensely in the administration of any relational database.
Remember, the use of a suffix is not mandatory when naming database objects.
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Oracle 数据库 10g 提供了大量帮助程序(或“顾问程序”),可帮助您决定最佳操作流程。其中一个示例是 SQL Tuning Advisor,它可以提供有关查询调整以及在流程中延长整个优化过程的建议。
但请考虑以下调整案例:假设一个索引确实有助于某个查询,但该查询只执行一次。这样,即使该查询可以得益于此索引,但创 ......
注:高危!
有时候,开发人员在应用服务器上,能拿到数据库的帐号和密码
如果想让DBA死掉,太简单了(哈哈哈~~,有人在奸笑~~!)
所以DBA啊,得处处小心。。
(有人说话了:你傻X吧,应用程序服务器怎么能让开发人员随便上?!)
嘿,就是上了,你DBA能咋样?
如果技术上使数据库帐号只能从某个机器(或某个IP地 ......
SQL语句操作全集
下列语句部分是Mssql语句,不可以在access中使用。
SQL分类:
DDL—数据定义语言(Create,Alter,Drop,DECLARE)
DML—数据操纵语言(Select,Delete,Update,Insert)
DCL—数据控制语言(GRANT,REVOKE,COMMIT,ROLLBACK)
首先,简要介绍基础语句:
1、说明:创建数据库
Create&n ......
对于Oracle的第三方开发工具,本人钟爱于Quest SQL Navigator 5.5,因为它反应迅速、支持多个账号同时登录,平时使用起来很方便。
不过,发现它有个缺点,就是一查询大点的表,CPU就占用50%以上,搞到我的本本狂叫,我真受不了。
到它官网,发现有新版本6.2了,不过下载要注册什么的,嫌麻烦。
晚上,突 ......