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[root@sql21 ~]# mysql -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3 to server version: 5.1.26-rc-log
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| test               |
+--------------------+
3 rows in set (0.00 sec)
mysql>
mysql> use information_schema
Database changed
INFORMATION_SCHEMAÌṩÁË·ÃÎÊÊý¾Ý¿âÔªÊý¾ÝµÄ·½Ê½¡£
ÔªÊý¾ÝÊǹØÓÚÊý¾ÝµÄÊý¾Ý£¬ÈçÊý¾Ý¿âÃû»ò±íÃû£¬ÁеÄÊý¾ÝÀàÐÍ£¬»ò·ÃÎÊȨÏ޵ȡ£ÓÐЩʱºòÓÃÓÚ±íÊö¸ÃÐÅÏ¢µÄÆäËûÊõÓï°üÀ¨“Êý¾Ý´Êµä”ºÍ“ϵͳĿ¼”
×îͨË×ÎÒÃÇ¿ÉÒÔ¿´³ÉÊDZ£´æϵͳÐÅÏ¢£¨Êý¾Ý×ֵ䣩µÄscheme¡£
mysql> show tables;
+---------------------------------------+
| Tables_in_information_schema          |
+---------------------------------------+
| CHARACTER_SETS                        |
| COLLATIONS                            |
| COLLATION_CHARACTER_SET_APPLICABILITY |
| COLUMNS                               |
| COLUMN_PRIVILEGES                     |
| ENGINES                    &nbs