The goal of this tutorial is to interact with the database in order to use it with flask_sqlalchemy python module. The db.Model is used to interact with the database. A database doesn't need a primary key but if you using the flask-sqlalchemy you need to have it for each one table in order to connect it. Let's see the database: C:\Python373\my_flask>python Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25
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