I want to have an "Entity" and many versions of it, where one of those versions is the only one which is active/used. It is also possible that the Entity is entirely deactive. So I thought o...

What is the design pattern in SQLalchemy and how does it work? I wonder how defining each column as class variable in a child class of db.Model provides necessary information to create table. How doe...

To simplify the description let's assume we've got a DB model with TimeScopes (ID, start, end) and Processes with FK (TimeScopes.ID), and this is one-to-many relation where all processes holding a ref...

I have to store the Id of all users that buy a product on my website in a MySQL table, in order for each user can be all the products bought by him. I don't want to create a table for each user, is th...