maintain database migrations

[sandeep patel]

Hello All,

Is there a way in aiohttp framework to maintain database migration like Django, flash,web2py.

I am using PostgresSQL or Sqlalchemy (ORM) for my app but whenever I want to aby update (change column type, etc )in the table so I have to delete the table and recreate the table.

How will I maintain all previous changes in the model or update the model without deleting the table?

Thanks

Sandeep