mysql> describe proficiencies;
+-------------+-------------+------+-----+---------+-------+
| Field       | Type        | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+-------+
| proficiency | varchar(50) | NO   |     |         |       |
| s           | int(11)     | YES  |     | NULL    |       |
| ra          | varchar(20) | NO   |     |         |       |
| cm          | int(11)     | YES  |     | NULL    |       |
| class       | varchar(30) | YES  |     | NULL    |       |
| source      | varchar(30) | YES  |     | NULL    |       |
+-------------+-------------+------+-----+---------+-------+