Considere a relação R (A, B, C, D, E) e o conjunto de dependências G = {{A, B} → {D},{B, C} → {A},{D, E} → {C}. Assinale verdadeiro ou falso para cada uma das alternativas abaixo e justifique. a) ABC é chave candidata.
b) AB é chave candidata.
c) DE é chave candidata.
d) DBE é chave candidata.

The most common battery cable terminal is a that provides a large surface contact area with the ability to tighten the terminal onto the battery post using a nut and bolt.

Suppose an astronomer discovers a large, spherical-shaped body orbiting the sun. the body is composed mostly of rock, and there are no other bodies sharing its orbit. what is the best way to categorize this body? a. planet b. moon c. comet d. asteroid

People with high self-esteem: accept their strengths and weaknesses. believe that failed experiences are failures of their whole self. feel good about who they are only when they reach total success. need positive external experiences to counteract negative feelings that constantly plague them.