from sqlalchemy import Boolean, Column, ForeignKey, Integer, String from sqlalchemy.orm import relationship from databases.mssql.database import Base class Region(Base): __tablename__ = "regions" id = Column( Integer, primary_key= True, index= True) name = Column(String(255)) active = Column(Boolean, default=True) class City(Base): __tablename__ = "cities" id = Column(Integer, autoincrement= True, primary_key= True, index= True) name = Column(String(255)) region_id = Column(Integer, ForeignKey(regions.id)) active = Column(Boolean, default= True)