Input data control (need some adviced from other people)

This is the situation. I'm in doubt where to integeate some functions for taking user input which then must be transfered in the production database.

I usually tend put everything in frontend application so database can be just a database, no other functions except storing and fetching data on demand.

I'm writing application for warehouse department and I need to integrate some business rules into new information system and I need some opinios before proceeding further.