The Customers table provides input to the Name and Address operator, which stores its output in the CLN_CUSTOMERS table. The CLN_CUSTOMERS table provides FIRST, LAST, and ADDRESS input to the Match Merge Operator. The Match Merge operator provides FIRST, LAST, and ADDRESS input to the MM_CUSTOMERS table. It provides FIRST, LAST, ADDRESS, MM_FIRST, MM_LAST, and MM_ADDRESS input to the REF_TABLE table.