from sqlalchemy import Table, Column, Integer, ForeignKey from app.database import Base project_skills = Table( "project_skills", Base.metadata, Column( "project_id", Integer, ForeignKey("projects.id", ondelete="CASCADE"), primary_key=True, nullable=False ), Column( "skill_id", Integer, ForeignKey("skills.id", ondelete="CASCADE"), primary_key=True, nullable=False ) )