Какой уровень запросов делал в SQLAlchemy

from sqlalchemy import create_engine, Table, Column, Integer, String, MetaData

engine = create_engine('sqlite:///example.db')
metadata = MetaData()
users = Table('users', metadata,
    Column('id', Integer, primary_key=True),
    Column('name', String),
)
metadata.create_all(engine)

from sqlalchemy.orm import declarative_base, sessionmaker

Base = declarative_base()
class User(Base):
    __tablename__ = 'users'
    id = Column(Integer, primary_key=True)
    name = Column(String)

Session = sessionmaker(bind=engine)
session = Session()
user = User(name='Alice')
session.add(user)
session.commit()