Computer Science Homework Solutions
Problem
#83380

Database Re-Engineering and Redesign

1.  Explain why database re-engineering and redesign is necessary.



2.  What is the difference between a correlated subquery and a regular subquery?



3.  Explain what is done when a NOT NULL column is added to a table.



4.  What is a dependency graph?



5.  Explain what should be done when adding tables and relationships for normalization.

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