Virus such as a Trojan or Worm, and can cause network crashes.
Answer:
Importancia de la tecnología en el crecimiento económico de los países. ... El desarrollo de estas vías tecnológicas aporta un aspecto positivo como el ahorro del tiempo, la disminución de los esfuerzos de los trabajadores que permite una economía progresiva.
Explanation:
The right ventricle contracts, and blood is forced through the pulmonary semilunar valve into the pulmonary artery. It then travels to the lungs. Hope this helps!
Answer:
a) We know that atleast one or more author writes a book.
Symbol to indicate one or more is (B)
So the correct option is B
b) We know that zero to multiple books are written by any author.
Symbol to indicate zero or more is (A)
So the correct option is A
c) The fourth option is correct if we replace by many to many relationship and generate a new entity.
So the relationship betweem author and contract is one to many. So we know that there is atleast one author that represent in symbol d and books has atleast 0 that represent in symbol c.
So Fourth Option is correct d at blue side and c at red side.
d) There are two forirgn keys in table Contract one is from AuthorId and other is ISBN.
So correcct option is C
