I'm wondering if there is a way to define a relationship without
creating an associated foreign key constraint in the database. It
seems like relationship() requires me to define a foreign key, and
that in turn automatically creates a foreign key constraint. I'm
currently using the declarative
The foreign key and join condition can be specified as part of the relation
definition without having the foreign key existing in the database
class User(Base):
__tablename__ = 'users'
logon = Column(String(10), primary_key=True)
group_id = Column(Integer)
class Group(Base):
