修改mysql的引擎为INNODB，可以使用外键，事务等功能，性能高。

修改my.ini，在[mysqld]下加上

    default-storage-engine=INNODB 

其中红色字体部分是要指定的引擎名称。

用sql语句修改已经建成表的引擎：

alter table tableName type=InnoDB

下面贴出我的my.ini文件供参考()：

[mysqld]

basedir=C:\Program Files\VertrigoServ\Mysql\

datadir=C:\Program Files\VertrigoServ\Mysql\data\

port =3306

key_buffer =64M

max_allowed_packet =1M

table_cache =128

sort_buffer_size =512K

net_buffer_length =8K

read_buffer_size =256K

read_rnd_buffer_size =512K

myisam_sort_buffer_size =68M

default-storage-engine=INNODB

[mysqldump]

quick

max_allowed_packet =116M

[mysql]

no-auto-rehash

# Remove the next comment character if you are not familiar with SQL

#safe-updates

[isamchk]

key_buffer =20M

sort_buffer_size =20M

read_buffer =62M

write_buffer =62M

[myisamchk]

key_buffer =20M

sort_buffer_size =20M

read_buffer =62M

write_buffer =62M

[mysqlhotcopy]

interactive-timeout