| Stores the information about set of unique Sector regions |
| A Sector is defined as a distinct intersection of tiles and TilingGeometries, characterized by a unique combination of intersecting tiles and a list of tilingVersions. The sampling rate for any targets is unambgously defined by the number of tiles involved (nTiles) and the combination of targetVersion. |
| Index Type | Key or Field List |
| primary key | regionId |
| foreign key | Region(regionID) |