The Computer Warehouse sells computer hardware, software, and supplies (such as paper). Individual customers just walk into the store, select merchandise, and must pay for their purchases in full before leaving the store. Corporate customers, however, call in orders in advance, so that the items are waiting to be picked up. Corporate customers may charge their purchases to their accounts. The Computer Warehouse mails corporate customers monthly statements that summarize all purchases made the prior month. Corporate customers pay the entire balance, as listed on the monthly statement, with one check or DFT transaction. All the cash receipts go into one bank account.

Please prepare an REA diagram of the Computer Warehouses revenue cycle, complete with cardinalities. (Hint: For this problem, there are two events, Sales and Cash receipts.). When you determine cardinality, you should consider all possible situations and for both individual and corporate customers, not just individual or corporate customers.