These services include map service, mapcatalog service, map querying service and thematic map service, etc.
服务主要包括：地图服务、地图目录服务、地图查询服务、地质图专题服务等；
2
Updating the catalog statistics would provide the optimizer with the most current map to navigate quickly through the terrain.
目录统计信息的更新将为优化器提供最新的地图，以便在整个地形中快速定位。
3
In that interaction, the catalog service returns information about the grid, including a complete routing map defining the location of all grid partitions and the associated key space for each.