修改mysql的engine引擎
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(http://www.my400800.cn )：
[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
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