Data items represented in computers form a ________ , in which data items become larger and more complex as they progress from bits to fields.

To mention another user in a post, enter the ________ character, followed by the person's name

A) @ B) # C) + D) ~

________ databases allow the user, if given proper permissions, to modify the file to include objects for their individualized use

Fill in the blank(s) with correct word