《自然语言处理实战入门》 第二章：NLP 前置技术----爬取本人CSDN博客

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1对象关系映射 ORM

1.1 简介

ORM框架的作用就是把数据库表的一行记录与一个对象互相做自动转换。

正确使用ORM的前提是了解关系数据库的原理。

SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL.

It provides a full suite of well known enterprise-level persistence patterns, designed for efficient and high-performing database access, adapted into a simple and Pythonic domain language.

https://www.sqlalchemy.org/

ORM的全称是:Object Relational Mapp