Question

i want to create application in windows. i need to use databases which would be preferable best for pyqt application

like
sqlalchemy
mysql
etc.

Answer 1

I would use SQLite every time unless performance became an obvious big problem.

• It comes with Python
• You don’t need to worry about installing it on a target machine or having an existing installation which might clash (including a potential port clash – SQLite doesn’t use a port)
• It’s fairly small (doesn’t increase the installed size too much)

Then, a much less obvious choice that I would very much consider making: adding Django to the mix. Django’s model system could make for much simpler management, depending on the type of data you’re working with. Also, in the case where I’ve considered it (I just haven’t got to that stage of development yet) it means I can reuse the models I’ve got on the server and a good bit of code from there too.

Obviously in this case you could need to be careful about what you expose; business-critical processing stuff that you don’t want to share, potential security holes in server code which you’ve helpfully provided the code for, etc.