1. Discuss the flow of cash through the transaction cycles. 2. Discuss the role of the conversion cycle for service and retailing entities. 3. Can a turn-around document contain information that is subsequently used as a source document? Why or why not? 4. Discuss the relationship between the balance in the accounts payable general ledger control account between what is found in the accounts payable subsidiary ledger. 5. What role does audit trail play in the task of confirmation? 6. What is the most striking difference between the database model and the flat-file model? 7. What is the database model? 8. What is the purpose of DBMS? 9. Flat files limit data integration. Explain. 10. What is an entity? 11. Distinguish between entity relationship diagrams and data flow diagrams. 12. What is an audit trail? How important is this?