An electronics manufacturer produces a range of consumer and commercial grade electronic devices. These include television sets, sound systems, computer monitors, mobile phones and many other products. Each of these products has a name and a unique ID number associated with them.

Components to make these devices can be purchased from a single vendor or from multiple vendors. Each component has a name, unique ID number and may include a component description (this information is optional).

The manufacturer sells its products to commercial buyers and also directly to consumers. The manufacturer keeps track of the name, address and phone numbers of the commercial buyers. Only the postcode for non-commercial buyers is stored.

Your first task is to construct an Entity-Relationship diagram that captures entities and their relationships. You are free to make assumptions about any information that you believe is not supplied as long as you state these assumptions. (Your assumptions should not contradict the description!)