Extension:SecurePoll/securepoll properties table

mysql> describe securepoll_properties;
+-----------+---------------+------+-----+---------+-------+
| Field     | Type          | Null | Key | Default | Extra |
+-----------+---------------+------+-----+---------+-------+
| pr_entity | int(11)       | NO   | PRI | NULL    |       |
| pr_key    | varbinary(32) | NO   | PRI | NULL    |       |
| pr_value  | mediumblob    | NO   |     | NULL    |       |
+-----------+---------------+------+-----+---------+-------+