Django models model ORM

I. Introduction of ORM

Mapping relations:

　　Name of table

　　Attributes of fields

　　Table record – — class instantiated object

ORMThe two major functions are:

　　Operating table:

　　　　- Create a table

　　　　- Modified table

　　　　- Delete table

　　Operation data row:

　　　　- crud

ORMLink database with pymysql third party tools

DjangoThere is no way to help us create the database. We can only tell it after we have created it, and let Django link it.

Two. Preparation before creating the table.

First, create your own database.

Two, configure MySQL database link in settings

　　sqlite3——Change to MySQL