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[answered] MIS562 Week 5 Assignments Name: _______________________ Hom


Please refer to the attached document.

This is for a database programming class. I need sql statements


MIS562 Week 5 Assignments

 

Name: _______________________ Homework (50 points)

 

Using the student schema from Week 4, provide answers to the following questions.

 

Question SQL Statement or Answer 1. Generate statistics for the student, enrollment,

 

grade, and ZIP code tables. (15 pts.)

 

2. 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.)

 

3. Produce an autotrace output and explain the

 

plan for each query. (10 pts.)

 

4. 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.) Page 1

 


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