Purview(noun) the body of a statute, or that part which begins with  Be it enacted,  as distinguished from the preamble. Purview(noun) the limit or scope of a statute; the whole extent of its intention or provisions. Purview(noun) limit or sphere of authority; scope; extent.
The difference between megabytes and gigabytes is the number of bytes that make up each unit and the amount of data they hold. A megabyte holds a million bytes, or about 1,000 kilobytes. A gigabyte holds about a billion bytes, or around 1,000 megabytes. Continue Reading.
TB has the prefix Tera. Terabyte is 1000000 times bigger than Megabyte. Megabyte (MB) is a unit of transferred or stored digital information, which is extensively used in information and computer technology. In SI, one megabyte is equal to 1,000,000 bytes. At the same time, practically 1 megabyte is used as 220 B, which means 1,048,576 bytes. Nowadays, the amount of information measured by megabytes is used for representing the size of a typical MP3 file, the size of a JPEG image, and so on.