介绍Oracle PL SQL编程，包括Oracle SQL基础和所有PL/SQL内容

此代码为利用PL/SQL开发数据库存储过程的典型示例，此为第4部分，希望大家可以通过该代码清楚如何利用SQL语句实现复杂的业务逻辑。-this code for the use of PL/SQL stored procedures development of the database of typical examples of this Part 4 We can hope that the adoption of the code clearly how to use SQL to achieve complex business logic.

oracle数据库的学习资料，分为4天的内容，非常详细、实用(learning materials oracle database is divided into four days of content, very detailed, practical)

在百亿数据中可急速计算两个时间的时差

Oracle入门讲座,你若是程序员还是要成为Ｏracle的DBA是你学习Oracle入门的好基础．(Oracle study. speak )

oracle dba 常用的管理脚本, 覆盖日常的系统管理.-oracle dba management script commonly used to cover day-to-day system management.

访问oracle数据的与C#接口,在C#中如何连接oracle数据库,访问存储过程,批量更新数据库等(Oracle data access with C# interface, in C# how to connect oracle database, visit the stored procedure, update the database, such as bulk)

Oracle基础教程超级的基础哦Oracle基础教程超级的基础哦Oracle基础教程超级的基础哦(The basiclearning of oracle )

DB_HELPER,是本人编写的一个学习database的小工具，适合于初学database的人作为入门参考。java语言编写-DB_HELPER, I prepared a database of small learning tool suitable for the novice database as a reference portal. Java language

 Oracle错误代码集合 ORA-17001=内部错误 ORA-17002=Io 异常 ORA-17003=无效的列索引 ORA-17004=无效的列类型 ORA-17005=不支持的列类型 ORA-17006=列名无效 ORA-17007=无效的动态列 ORA-17008=关闭的连接        ORA-17009=关闭的语句        ORA-17010=关闭的 Resultset      

powerbuilder9 1-创建应用、窗口与控件-powerbuilder9 1- Create the application window and controls