COSC 4820 Database Systems

Exam #1 Results

Ruben Gamboa
Professor

Exam Questions

Question Points Topic
q1a-e 15 Reading Relational Algebra
q2a-e 15 Writing Relational Algebra
q3 15 E/R Schema Design
q4 15 E/R to SQL DDL
q5a 5 Closure Algorithm
q5b 5 Keys
q5c 5 More Keys
q5d 5 Projecting FDs
q5e 10 BCNF Decomposition
q5f 2 Is BCNF Lossless?
q5g 3 Is BCNF FD-Preserving?
q6a 3 Is FD Implied
q6b 2 Minimal Basis

Grade Distribution

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   35.00   63.00   72.00   73.07   81.50   99.00

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Grade Distribution by Question

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Grade Distribution for Question 1

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Grade Distribution for Question 2

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Grade Distribution for Question 5

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Grade Distribution for Question 6

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