What are the disruptive effects on individuals?

Now that you know the disruptive effects of blockchain technology, Oracle's strategy behind leveraging the technology, and its PaaS offering, the Blockchain Cloud Service, let's look at the disruptive effects the technology has on individuals. The following effects are speculative, based on common sense, and some future thinking. My approach here is to review certain job roles and explain the effects the technology can have on each.

Database administrator

Blockchain will definitely have an impact on database technologies as it replaces the trusted third party that normally mediates any data transactions. Instead of a centralized database that records transactions, and authenticates and authorizes each user, blockchain allows transactions and identities to be validated by any of the nodes in the network, which can exist at different physical locations. Each transaction needs to be confirmed by multiple nodes before being committed to the database...