Description of the illustration transactional_data.gif

This graphic provides a sample of transactional data. There is a TRANS_ID column, which holds the non-unique transaction identifiers.. The transaction items are in the PROD_NAME column. There are three products in transaction 100001, two products in transaction 100002, four products in transaction 100003, two products in 100004, three products in 100006, two products in 100007, one product in 100008, and two products in 100009. Each item is a separate row, therefore the transaction identifiers in the TRANS_ID column are not unique.