Recall & Review
beginner
What is performance tuning in databases?
Performance tuning is the process of improving database speed and efficiency to make queries run faster and use fewer resources.
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beginner
Why does slow database performance affect users?
Slow database performance can make applications feel unresponsive, causing frustration and reducing productivity for users.
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intermediate
How does performance tuning save costs?
By making queries faster and more efficient, performance tuning reduces the need for expensive hardware and lowers cloud service bills.
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beginner
What are common signs that a database needs performance tuning?
Common signs include slow query responses, high CPU or memory usage, and long wait times during peak hours.
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beginner
Name one simple way to improve database performance.
Adding indexes to columns used in search conditions can speed up query results significantly.
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Why is performance tuning important for databases?
✗ Incorrect
Performance tuning helps queries run faster and uses fewer resources, improving overall efficiency.
Which of these is a sign that your database might need tuning?
✗ Incorrect
High CPU usage during queries often indicates inefficient queries that need tuning.
How can performance tuning reduce costs?
✗ Incorrect
Efficient queries use fewer resources, which lowers cloud service costs.
What is one common method to improve query speed?
✗ Incorrect
Indexes help the database find data faster, speeding up queries.
What happens if a database is slow for users?
✗ Incorrect
Slow databases frustrate users and reduce their ability to work efficiently.
Explain why performance tuning is important for a database system.
Think about how slow queries affect users and costs.
You got /4 concepts.
List common signs that indicate a database needs performance tuning.
Consider what happens when the database struggles under load.
You got /3 concepts.