Extension:ContentTranslation/cx corpora table

mysql> describe cx_corpora; ++--+--+-+-++ ++--+--+-+-++ ++--+--+-+-++
 * Field             | Type             | Null | Key | Default | Extra          |
 * cxc_id            | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
 * cxc_translation_id | int(11)         | NO   | MUL | NULL    |                |
 * cxc_section_id    | varbinary(30)    | NO   |     | NULL    |                |
 * cxc_origin        | varbinary(30)    | NO   |     | NULL    |                |
 * cxc_sequence_id   | int(11)          | YES  |     | NULL    |                |
 * cxc_timestamp     | varbinary(14)    | YES  |     | NULL    |                |
 * cxc_content       | mediumblob       | YES  |     | NULL    |                |