A business analyst wishes to show that a company wants to store information about different types of product. Some attributes are common to every product (for example; product name) but other attributes only apply to certain product types. For example, product material only applies to accessory products. Which of the following constructs could the business analyst use to represent this on a class model?
A batch program runs every night to raise invoices. The next day these invoices are posted out to customers by a clerk. Customers pay the invoices with cheques. The cheques are then banked by a clerk. In this scenario, which of the following represents a business event?
The entity relationship model below shows the relationship between Customer and Order. Which of the following business rules is correct?
