What is the function of primary keys? primary keys facilitate because they act as unique identifiers.

When you mouse over and click to add a search term this(these) boolean operator(s) is(are) not implied. (select all that apply)?

Ihave been given the number of guns per 100, and the total firearm-related deaths per 100,000. i have to find the actual number of guns per country and actual number of gun-related deaths. if somebody could show me how to do 1 question, i can finish the rest, i am just confused. tia

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts