id = Column(Integer, primary_key=True, nullable=False)
version_group_id = Column(Integer, ForeignKey('version_groups.id'), nullable=False, autoincrement=False)
encounter_terrain_id = Column(Integer, ForeignKey('encounter_terrain.id'), primary_key=False, nullable=False, autoincrement=False)
id = Column(Integer, primary_key=True, nullable=False)
version_group_id = Column(Integer, ForeignKey('version_groups.id'), nullable=False, autoincrement=False)
encounter_terrain_id = Column(Integer, ForeignKey('encounter_terrain.id'), primary_key=False, nullable=False, autoincrement=False)