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ITEC 451 Assignment 3
This is an “old school” assignment designed to force students to read the text book in order to
gain useful information about database performance.
Read Chapters 10 – 12 and answer the following questions from the review sections:
Chapter 10
1) What is the single most important configurable component of a RDBMS?
2) What is the purpose of the data cache? How do you determine the read efficiency of
the data cache?
3) What three concurrency problems can negatively affect performance?
4) Why are certain database operations not logged?
5) What type of information is recorded in the database transaction log?
Chapter 11
1) What is the best performance tuning technique a DBA can use to improve database
performance?
2) How many indexes should be defined for a single table? What are the causes of
database index disorganization?
3) Discuss the pros and cons of providing database objects with free space.
4) What is table partitioning and how can it help performance?
5) What is the benefit of allocating tablespaces and indexes on separate disk devices?
Chapter 12
1) Define the impact of using the LIKE operation with a wild-card character at the
beginning of the value.
2) What factors influence the optimizer during SQL access path selection.
3) What is a nonmatching index scan and under what circumstances is it performed?
4) Under what circumstances will a table scan outperform indexed access?
5) Why is it important to use caution before implementing SQL tweaks and hints?
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Open the dependency report HTML file in a web browser.
Click the suppress button next to the found vulnerability. See example below:
Click on the Complete XML Doc button, then use Ctrl+C to copy the highlighted contents as shown below:
Next, navigate back to the code base project in Eclipse and create a file called suppression.xml in the same directory as the pom.xml file.
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<suppressionFiles>
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