Final answer:
Accounts receivable are calculated as the difference between the sales invoices (total billed) and cash receipts (cash collected) events. This reflects the amount still owed by customers to the company.
Step-by-step explanation:
A company using a centralized database might calculate the accounts receivable balances at any point in time as the difference between the amounts in the SALES_INVOICES and the amounts in the CASH_RECEIPTS relations.
The correct answer to which continuous events would be used to compute accounts receivable is b. SALES_INVOICES and CASH_RECEIPTS. Sales invoices represent the total amount billed to customers, while cash receipts represent the cash collected from customers. The difference between these two values is the amount still owed by customers, hence the accounts receivable balance,