How to recreate database from old database using sequelize in node.js

Question

I am facing some problem with sequelize while i keep {force: true} . In this case old data dropped and new database is created and my saved data get lost. I want to create new database with old values. Can that possible with sequelize in node.js

Answer 1

When you have database with some data and want to make some changes in db you have two possibilities:

1. as you said recreate db, but this will drop tables (erase your data).
2. use migrations (you can read about it here )

Migrations allow you to to don't loose your data and instruct sequelize how to change tables.

There is ticket for recreating tables with alter tables instead of drop tables here