Other contributors have said "Data about Data is called?" is the same question as "What are data about data called?" If you believe that these are not asking the same thing and should be answered differently, click here
Yes, they can be used interchangeably, but they usually mean separate things. A type of data is something like an integer, or string. While a data structure usually refers to a linked list or tree of...
It depends on what exacly you are talking about and image can range between a ghost image, just a picture or an ISO image and when you ask data if your talking about what makes up all data on any...