How to manage django and flask application sharing one database model?
Firstly, don't do this; you're in for a world of pain. Use an API to pass data between apps.
But if you are resigned to doing it, there isn't actually any problem with migrations. Write all of them in one app only, either Django or Alembic and run them there. Since they're sharing a database table, that's all there is to it.
I have two repository written in flask and django.
These projects sharing the database model which is written in SQLAlchemy in flask and written in Django ORM.
When I write migration script in flask as alembic, How can django project migrates with that script?
I also think about Django with SQLAlchemy.  But I can't find out Django projects using SQLAlchemy. Is that bad idea?
Thanks.