Which of the following requests below require data mining techniques rather than traditional database techniques.
1. Identify all shoppers who bought dog food last week.
2. Identify items that tend to be purchased by common shoppers.
3. Identify any correlation between time-of-day and items purchased.
4. Identify the items purchased during the first hour after opening the store.
3
2 3 4
2 3
1 2 3