its like the thing that holds your contacts info in your phone or your social media account
databases hold other information too
big companies like banks usually have huge databases
they're usually in a excel spreadsheet sheet like format
in that format things like name, phone number, email, bank account, interest rate are COLUMNS
things like bank account & interest rate amounts are usually ROWS
when you look for a hard to find social media accounts thru various search websites thats like DATA MINING