[b]1、Mysql errono 1005 : 主外键不是完全一致[/b] , 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 [b]2、Mysql errono 121: 外键约束名称重复 3、记录 Mysql WorkBench 中单词缩写意义：[/b] 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”) [b]4、mysql 权限设置 [/b]//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; [b]5、防火墙设置 [/b]//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 [b]6、开机自动运行(实现类似Windows服务) [/b]/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