Есть ли опыт написания кода для БД

import sqlite3
conn = sqlite3.connect('example.db')
cursor = conn.cursor()
cursor.execute('''CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT)''')
cursor.execute("INSERT INTO users (name) VALUES ('Alice')")
conn.commit()

import psycopg2
conn = psycopg2.connect(dbname='test', user='postgres')
cursor = conn.cursor()
cursor.execute("SELECT * FROM users")

from sqlalchemy import create_engine, Column, Integer, String
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base

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

engine = create_engine('sqlite:///example.db')
Session = sessionmaker(bind=engine)
session = Session()