INDICES FOR TABLE  Sector2Tile

Match tiles to sectors, 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.

Index TypeKey or Field List
primary keyregionId, tile
foreign keySector(regionID)
foreign keyTileAll(tile)
covering unique indextile, regionID