The old question “Is it in the database?” will be replaced by “Is it on the blockchain?”
But, what is blockchain exactly? What is it and how does it work?
For those who want to understand the principles in 2 mn read, go to this page of the Corda website. You won’t become a blockchain developer, but you will understand the principles. Blockchain is as complex or simple to understand as the internet, emails, streaming, etc.