Manual:Langlinks table

langlinks table tracks interlanguage links.

DESCRIBE langlinks; in MediaWiki 1.8 gives the following:

+--+-+--+-+-+---+ +--+-+--+-+-+---+ +--+-+--+-+-+---+
 * Field   | Type            | Null | Key | Default | Extra |
 * ll_from | int(8) unsigned | NO   | PRI | 0       |       |
 * ll_lang | varchar(10)     | NO   | PRI | NULL    |       |
 * ll_title | varchar(255)   | NO   |     | NULL    |       |

+--+-+--+-+-+---+ +--+-+--+-+-+---+ +--+-+--+-+-+---+
 * Field   | Type            | Null | Key | Default | Extra |
 * ll_from | int(8) unsigned | NO   | PRI | 0       |       |
 * ll_lang | varchar(10)     | NO   | PRI | NULL    |       |
 * ll_title | varchar(255)   | NO   |     | NULL    |       |

+--+-+--+-+-+---+ +--+-+--+-+-+---+ +--+-+--+-+-+---+
 * Field   | Type            | Null | Key | Default | Extra |
 * ll_from | int(10) unsigned| NO   | PRI | 0       |       |
 * ll_lang | varchar(20)     | NO   | PRI | NULL    |       |
 * ll_title | varchar(255)   | NO   |     | NULL    |       |

+--+-+--+-+-+---+ +--+-+--+-+-+---+ +--+-+--+-+-+---+
 * Field   | Type            | Null | Key | Default | Extra |
 * ll_from | int(8) unsigned | NO   | PRI | 0       |       |
 * ll_lang | varchar(10)     | NO   | PRI | NULL    |       |
 * ll_title | varchar(255)   | NO   |     | NULL    |       |