What concept in information technology means inactive data that is stored physically in any digital form?

What concept is the residual representation of digital data that remains even after attempts have been made to remove or erase the data?

………. is defined as a set of related data or information that is being stored in secondary storage.

The basic storage element in a digital system is

Compare and contrast the information storage methods used in the Pre-Mechanical Age and the Electronic Age.

What technology allows users to access data anywhere and at any time?