1、Mysql errono 1005 : 主外键不是完全一致 , 请检查如下几点:

a、字段是否存在

b、类型是否一致(注意unsigned , powerdesign 生成问题)

c、数据库引擎是否一致

d、字符编码是否一致

e、windows平台下注意修改lower_case_table_names = 0, windows本身不区分文件大小写,改为0之后就区分了可能造成找不到引用的表

2、Mysql errono 121: 外键约束名称重复

3、记录 Mysql WorkBench 中单词缩写意义：

PK: primary key (column is part of a pk)

NN: not null (column is nullable)

UQ: unique (column is part of a unique key)

AI: auto increment (the column is auto incremented when rows are inserted)

BIN: binary (if dt is a blob or similar, this indicates that is binary data, rather than text)

UN: unsigned (for integer types, see docs: “10.2. Numeric Types”)

ZF: zero fill (rather a display related flag, see docs: “10.2. Numeric Types”)

4、mysql 权限设置

//添加远程主机访问MYSQL root权限

insert into user(host,user,password) values('%','root',PASSWORD('root'));

//root 权限授权

grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;

//更新权限设置

flush privileges;

5、防火墙设置

//打开端口

/sbin/iptables -I INPUT -p tcp --dport 3306 -j ACCEPT

//保存

/etc/rc.d/init.d/iptables save

//查看状态

/etc/init.d/iptables status

6、开机自动运行(实现类似Windows服务)

/sbin/chkconfig --level 2345 mysqld on

/sbin/chkconfig --list

结果如下:

mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off