Just as every database, this database is an organized collection of data which provides information about some aspect of reality, in this case the ownership of things. Alice, Bob, Steve and Peter own a specific quantity of iPhones, US Dollars, IBM shares and Bitcoins.
Shares is a piece of paper, bitcoin is a digital currency. What would you say if the person holding US$ is having it stored on PayPal, or if the person having iPhones has 2 iPhones that are non-functioning?
So, Peter owns 2 numbers and Peter owns number 2. But how can someone own a number?
Ever heard of a digital signature? That's how one can prove they own those bitcoins.
Just as every As such, these numbers are valueless on their own, and they can be created out of thin air. On the other hand, electronic devices, borrowers liabilities/collaterals, and company's capital, obviously cannot be created out of thin air. And that is why things (iPhones, US Dollars and IBM Shares) are what have value, not the numbers. Numbers are just symbols that represent/quantify these things and they cannot have value in principle. For e.g. in the case of dollars, it is not the number "20" in the database what Bob owns. He owns a share in the total claims that originated from the total borrowers liabilities. If the total liabilities(debt) in the U.S monetary system is X, Bob owns 20/X of share in claims derived from these liabilities.
You do know that USD is created out of thin air, as in, they are printed limitlessly and yet have people starving to death. Shares and bitcoin, both of their prices are determined by market forces. And shares ARE created out of thin air. Sometimes ownership of a company's capital means nothing.
But, in the case of bitcoin, Peter literally owns number "2" in the database, since bitcoin(entry in column C) is just a fancy name for the number in column B and it represents nothing outside the database itself. So, since bitcoin is a number while numbers are only representations of values that exist outside the database, not only that bitcoin has zero value but the term "bitcoin's value" is an oxymoron.
Bitcoin is not just a number, stop misleading people. Its a currency that has now become more of a speculative asset. Bitcoin has value, like it or not. It is not zero, if it was, nobody would be using it, and nobody would be "hodling" it. No one can explain anything to you,if you live in blindspread ignorance.