Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
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Chapter 1, Problem 1SA

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Importance of CPU (Central Processing Unit):

  • CPU is a part of the computer which actually runs the program.
  • It is the most important component because without CPU, we cannot run any software.
  • But when a task is performed, we simply say that the code or the program is running or executing.
  • In olden days, they were the huge devices which were made up of electrical and mechanical components like vacuum tubes and switches.
  • ENIAC (Electronic Numerical Integrator and Calculator) is considered as the world’s first programmable electronic computer which is 8 feet tall and 100 feet long...

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Given a relation schema R = (A, B, C, D, E,G) with a set of functional dependencies F {ABCD BC → DE B→ D D→ A}. (a) Show that R is not in BCNF using the functional dependency A → BCD. (b) Show that AG is a superkey for R (c) Compute a canonical cover Fc for the set of functional dependencies F. Show your work. (d) Give a 3NF decomposition of R based on the canonical cover found in (c). Show your work. (e) Give a BCNF decomposition of R using F. Show your work.
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Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)

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