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Consider a relation R(A, B, C, D, E) with the following dependencies:AB → C, CD → E, DE → B
Is AB a candidate key of this relation? If not, is ABD? Explain your answer.
Computer Engineering, Engineering
A small sports club keeps information about its members and the fees they pay. The secretary wants to be able to record when members pay and print a report similar to that in the figure below. last n me - first_narne - p ...
A chemistry student needs 55.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC Handbook of Chemistry and Physics , the student discovers that the density of dimethyl sulfoxide is 1.10 g.cm^-3. Calculate ...
What pieces of hardware and software do the collision detection?
In some states allow requires drivers to turn on their headlights when driving in the rain. A highway patrol officer believes that lesson one-quarter of all the drivers follow this rule. As a test, he randomly samples 20 ...
Assembly programs use 32 bits to address memory and can access up to 4gb of memory. If an assembly code for a system uses 16 bits to address memory, how many bytes of memory can the program access? Is it as simple as 2^1 ...
At a certain temperature, this reaction establishes an equilibrium with the given equilibrium constant, Kc. Kc = 1.53 * 10^21 3A (g) + 2B (g) ------> 4C(g) If, at this temperature, 1.50 mol of A and 4.00 mol of B are pla ...
Discussion : A Network-Based Intrusion Imagine you live by yourself on a quiet street. Each day, you leave your house in the morning and drive to work. One day while you are at work, someone breaks into your house by kic ...
What are some skills individuals who work in the field of cyber security need to prevent hacks in to a company's computers?
When talking about Economics and the history of it. For the past recessions the U.S. has had, do we look at it mostly on the loan side of the banks or what causes most recessions?
Question You are a software engineer working at a large publicly-traded corporation, where a colleague invents a new kind of compiler. Your managers see it as a huge potential cash cow. How would you respond in a way tha ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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