system-pri/backend/app/base/models.py

from ..dependencies import db


class Base(db.Model):
    __abstract__ = True

    id = db.Column(db.Integer, primary_key=True, autoincrement=True)


class Person(db.Model):
    __abstract__ = True

    first_name = db.Column(db.String(255), index=True, nullable=False)
    last_name = db.Column(db.String(255), index=True, nullable=False)
    email = db.Column(db.String(120), index=True, nullable=False)