Extension:Translate/translate messageindex table

mysql> describe translate_messageindex;
+-----------+----------------+------+-----+---------+-------+
| Field     | Type           | Null | Key | Default | Extra |
+-----------+----------------+------+-----+---------+-------+
| tmi_key   | varbinary(255) | NO   | PRI | NULL    |       |
| tmi_value | varbinary(255) | NO   |     | NULL    |       |
+-----------+----------------+------+-----+---------+-------+