When a database is distributed, for instance, it becomes much more difficult to achieve the same kind of consistency or isolation that you can on a single machine.
For instance, she said, an employee ticking the wrong box when they enter your data into a database could mean a person ends up labelled as a former criminal or credit liability.
For instance, a database administrator can mistakenly implement a security policy that affects all of users of the service but actually contravenes the policies or rules that some customers need to abide by (due to above-mentioned national or industry rules).