Computers and Technology, 21.12.2019 00:31 MarbleMonkey7907
Suppose that we are given a relation schema r with four attributes, abcd, and the set of fds f = { ab ï‚® c, bc ï‚® d, d ï‚® a }. assuming those are the only dependencies that hold for r, answer the following questions (justify briefly your answers): (a) is ac a key of r? (b) is ab a key of r? (c) what is a prime attribute? is attribute a a prime attribute? (d) is r in 3rd normal form (3nf)? (e) is r in boyce-codd normal form (bcnf)
Answers: 3
Computers and Technology, 22.06.2019 02:00
The word ‘play’ comes with many different interpretations and a variety of definitions. discuss some of the various meanings tied to the word play. why is the concept of play thought to be an important addition to the workplace? do some (brief) research online and give an example of how play in the workplace is being done right.
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Computers and Technology, 23.06.2019 05:00
Jason works as an accountant in a department store. he needs to keep a daily record of all the invoices issued by the store. which file naming convention would him the most?
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Computers and Technology, 23.06.2019 12:00
What does the level 1 topic in a word outline become in powerpoint? a. first-level bullet item b. slide title c. third-level bullet item d. second-level bullet item
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Computers and Technology, 23.06.2019 13:30
Spoons are designed to be used for: spring hammering. applying body filler. identifying high and low spots. sanding highly formed areas.
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Suppose that we are given a relation schema r with four attributes, abcd, and the set of fds f = { a...
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