The first statement in the mapping block links the AirportMapping class to the usgs_airports table.
mapping块的第一条语句将 AirportMapping类链接到 usgs_airports表。
The first statement in the mapping block links the AirportMapping class to the usgs_airports table.
mapping块的第一条语句将 AirportMapping类链接到 usgs_airports表。
应用推荐