数据库访问技术的演变 http://www.microsoft.com/china/MSDN/library/data/sqlserver/TheEvolutionofData.mspx?mfr=true

oracle 的左、右连接 http://www.zahui.com/html/8/16105.htm

asp 中database的连接 http://www.6to23.com/s11/s11d4/200212221427.htm

oracle exp/imp 详解 http://www.douzhe.com/docs/bbsjh/8/798.html

sql 查询使用双引号 http://www.china-askpro.com/msg18/qa27.shtml

SQL server　语句导入导出大全　http://www.pconline.com.cn/pcedu/empolder/db/sql/0502/551039.html

oracle 傻瓜问题 http://www.ddvip.net/cert/oracle/index3/8.htm

oracle 中常用sql 语法 http://fengyu.china.com/sql1.htm

sql 函数整理 http://www.douzhe.com/docs/jh/20/247515.html

Mutating Table Problems with DELETE CASCADE  Mutating Table Problems with DELETE CASCADE  http://www.akadia.com/services/ora_mutating_table_problems.html

after delete trigger http://www.techonthenet.com/oracle/triggers/after_delete.php

Oracle 8i在GNU/Linux上的安装笔记 http://www.chedong.com/tech/oracle.html

creat trigger statment http://www.ianywhere.com/developer/product_manuals/sqlanywhere/0902/en/html/dbrfen9/00000379.htm