Mis/562 mis 562 mis562 week 5 individual assignment – sql file +

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MIS/562 MIS 562 MIS562 Week 5 Individual Assignment – SQL File + Screenshots – A+ Guaranteed!

 

MIS/562 MIS 562 MIS562

IS/562 IS 562 IS562

DeVry University

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Homework (50 points) 

Using the student schema from week 2, provide answers to the following questions.

Question

SQL statement or Answer

1.    Generate statistics for the student, enrollment, grade, and zipcode tables (15 pts)

 

1.    Write a query that performs a join, a subquery, a correlated subquery using the student, enrollment, grade, and zipcode tables.  Execute each query to show that it produces the same results.  (15 pts)

 

1.    Produce an autotrace output and explain plan for each query.  (10 pts)

 

1.    Analyze the results and state which performs best and why.  Write an analysis of what operations are being performed for each query.  Determine which query is the most efficient and explain why (10 pts)