Hi! Can someone please explain to me how databases work exactly?

Question

I have just recently started studying databases and it is still not clear for me how they work, how they can be used, etc. Also the migration of a database between all these database editing tools like MS sql server, Mysql, seems really hard. Why? Where are all these databases kept? What do you do with your database once it's done? All I have done so far is creating tables and establishing relationships between them.

Thank you very much in advance!

Answer 1

like a notebook where u can write with pencil(code) wipe and look for something