Consider the set of attributes r = {abcdef}, and the fd set x = {ab → c, ac → b, ad → e, b → d, bc → a, e → f}. for each of the following decompositions, check if it is dependency-preserving and satisfies the lossless-join property and determine the normal form for each relation:

(a) {ab, bc, abde, ef},
(b) {abc, acde, adf}.

Consider how gaming consoles initially relied on joysticks and joypads and then made the switch to modern gaming controls, which include analog sticks, buttons and switches, touch controls, accelerometers, motion controls, etc. name at least two kinds of gaming experiences that are possible with these new control devices but were not possible on original joysticks. explain how new technologies made this newer game style possible.

In excel - calculate the actual increase/decrease from first quarter to the second quarter then subtract subtract first quarter value from second quarter total then divide result by first quarter value

Brian wants to conduct an online search with a certain phrase. he intends to use the words books that belong to the 1800s in his search. how should he use the word that in his search?