Module 01 Self-Test (cover answers, try first)
- What's the SQL execution order?
- Why is set lookup O(1) but list lookup O(n)?
- P(A or B) when A and B are NOT mutually exclusive?
- What does ETL stand for?
- How do you find customers with no orders using SQL?
- What does STAR stand for?
Practice Questions
Q: What's the SQL execution order?
Q: Why is set lookup O(1) but list lookup O(n)?
Q: P(A or B) when A and B are NOT mutually exclusive?
Q: What does ETL stand for?
Q: How do you find customers with no orders using SQL?
Q: What does STAR stand for?