Which option is typically only used when utilizing self joins? O display name
O alias
O relationship
O primary key

no backup memory

the answer is d.

by: nicholas dooley

answer(a) occurs after your prediction;

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.