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Table 1 A sample database with example representing association rule

From: Qualitative usability feature selection with ranking: a novel approach for ranking the identified usability problematic attributes for academic websites using data-mining techniques

Transaction ID Items Possible association rule
1 Milk, bread, eggs {Cheese, milk} → bread [support=5%, confidence=80%]
80% of customers, who buy cheese and milk, also buy bread
5% of customers buy all these products together
2 Bread, sugar
3 Bread, cereal
4 Milk, bread, sugar
5 Milk, cereal
6 Bread, cereal
7 Milk, cereal
8 Milk, bread, cereal, eggs
9 Milk, bread, cereal