processing is an action or series of actions that a microprocessor, also known as a central processing unit (CPU), in a computer performs when it receives information.
Explanation:
For example, Windows you can see each of the processes running by opening the Processes tab in Task Manage
When using databases in a project, not everyone has the same access level, e.g the database admin may have the highest level of access (access to data on live mode), the software testers have their own level of access (access to data on test mode) and so on.