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Let R be decomposed into R1, R2, ..., Rn. Let F be a set of FDs on R
1. Define what it means for F to be preserved in the set of decomposed relations.
2. Describe a polynomial-time algorithm to test dependency-preservation.
3. Projecting the FDs stated over a set of attributes X onto a subset of attributes Y requires that we consider the closure of the FDs. Give an example where considering the closure is important in testing dependency-preservation; that is, considering just the given FDs gives incorrect results.
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This assignment requires the use of a relational database management system. Strayer University provides each student with a login id to a University maintained Oracle Database Server for you to implement your tables and queries in this course.
Also identify the two top choices of each category of device, table and laptop, with a $1,000 USD maximum price that you recommend for her consideration.
Many employers gather and store information on an employee's use of email and the Internet. They will then use that information to measure the quality and quantity of an employee's work. Identify one ethical implication of this practice. (minimum..
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Looking ahead in an STL iterator requires an application of operator++, which in turn advances the iterator. In some cases looking at the next item in the list, without advancing to it, may be preferable.
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The Institute for Policy Innovation estimates the music industry loses $12.5 billion to digital piracy each year. At the same time, Dr. Karen Croxson at the University of Oxford argues that piracy actually helps promote products. Upon what does she b..
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Perform an analysis and investigation about an ethical issue - Why do people pirate in copious amounts in Australia?
This module's project piece adds a What-If analysis component into your Excel project workbook. Using whatever tools and examples are at your disposal, incorporate at least one supported What-If analysis into your Excel project workbook
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