Example of a superkey. Suppose we have a table that holds all the managers in a company, and that table is called Managers. The table has columns called ManagerID, Name, Title, and DepartmentID. Every manager has his/her own ManagerID, so that value is always unique in each and every row.
Channel 583 (HD) Channel 83 (SD) Fox Sports 1 (FS1) is an American sports-oriented cable and satellite television channel that is owned by the Fox Sports Media Group, a unit of the Fox Entertainment Group division of 21st Century Fox.
NBCSN is an American digital cable and satellite television channel that is owned by the NBC Sports Group division of NBCUniversal. It originally launched on July 1, 1995, as the Outdoor Life Network (OLN), which was dedicated to programming primarily involving fishing, hunting, outdoor adventure programs, and outdoor sports.