session.mapper(Disk, disk_table)
session.mapper(Type, types_table)
session.mapper(Mirror, mirrors_table)
session.mapper(Disk, disk_table)
session.mapper(Type, types_table)
session.mapper(Mirror, mirrors_table)
-session.mapper(CDROM, cdroms_table)
+session.mapper(CDROM, cdroms_table,
+ properties={'mirror': relation(Mirror, backref="cdroms")})