oracle 外键约束加触发器问题? - Oracle / 非技术区
SQL code:
create table user_file (
userID int not null,
userName VARCHAR2(10),
userPwd VARCHAR2(10),
primary key (userID)
);
create table articletype (
magazineType int not null,
magazienTypeName VARCHAR2(20) not null,
primary key (magazineType)
);
create table article (
authorID int not null,
artcleName VARCHAR2(20) not null,
reportDate DATE,
magazine VARCHAR2(20),
magazineType int,
authorOrder int,
extend VARCHAR2(100),
foreign key (authorID) references user_file(userID)on delete
cascade,
foreign key (magazineType) references articletype(magazineType) on
delete cascade
);
create table log_file (
userID int not null,
operater VARCHAR2(10),
operaterDest VARCHAR2(20),
operaterDate DATE,
foreign key (userID) references user_file(userID)
);
前面是我建的表,下面是我建的触发器
SQL code:
--论文更新触发器
CREATE OR REPLACE TRIGGER article_log_file
BEFORE INS
相关问答:
private static final String URL = "jdbc:oracle:thin:@localhost:1521:orcl";
private static final String USERNAME = "sys";
private static final String PASSWORD = "s ......
假设table01 中有 以下资料
emp_no emp_name
------- ------------
0001 TOM
0002 JOHN
0003 MARY
常用电话
而我们要得到以下的OUTPUT (或是各种其他的output)
0001,TOM
0002,JOHN
......
--建立一个包以定义一个游标
create or replace package PK_test
as
type cur_test is ref cursor;
end PK_test;
--建立一个过程,通过输入JOBID,返回一个表记录(游标)!
create or replace ......
谢谢唐人老大的指点,谢谢各位高手的指点!
安装10g Enterprise。上网下了MLDN的Oracle视频,跟着视频上的配置走,安装成功了,但是没完整地配置。
点击进入:Database Configuration Assistant
1. 创建数据库;
......
SELECT * from (SELECT A.*, ROWNUM RN from (SELECT * from t_out_logon) A WHERE ROWNUM <= 30)WHERE RN >= 21
SELECT A.* from (SELECT t.*,rownum rn from t_out_logon t WHERE ROWNUM <= 30) A WHERE ......