Part of product in a business diagram refers to the relationship between different parts or components of a product within a larger system. A product can be any physical or digital item that is sold or used by a business, such as a piece of software, a manufactured item, or a service.
Arrows or lines may be used to show the relationships and connections between these components. For example, a line might connect a raw material to a sub-assembly to represent how the raw material is transformed into a component of the final product. Similarly, a line might connect a sub-assembly to the finished product to represent how the component is assembled into the final product.