How to choose a database for an online store of building materials?

Question

Database

Hello everyone, I have a task to create an online store. There was a question what DB to select. Thinking about Firebase. The priority is the cheapness of the product and speed. Advise what to choose.

Answer 1

Choose any, unless of course you have a Leroy size store

Answer 2

Advise what to choose.

Choose a specialist who has experience - he will justify what is needed and how much. Naturally not free. But all this will ultimately be many times cheaper than self-education in the construction of bicycles for riding a rake.