| Match tiles to sectors, wedges adn sectorlets, and vice versa. |
| This table is designed to be queried in either direction - one can get all the tiles associated with a sector, or one can find all the sectors to which a tile belongs. |
| name | type | length | unit | ucd | description |
| regionID | bigint | 8 | ID_CATALOG | ID of the sector | |
| type | varchar | 16 | type of the sector | ||
| tile | smallint | 2 | ID_CATALOG | tile number | |
| isMask | int | 4 | flag that shows sign of tile (1 is negative) |