An Aspect is the approach, method of approach, point of view of a product or service or a part of a product or service
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in relation to a given situation,
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from a certain point, from a certain direction
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or at a certain angle
Note:
An Aspect does not describe the product specific Properties itself (like Properties of Block and Application Classes Properties), but it includes Properties for that Class under certain conditions or additional Properties for a Class under certain point of views.
Properties that describe the requirements for a device, are a typical Aspect of a device.
Example:
The Aspect "Operating conditions" of a car. It describes under which conditions the car is to be operated: Central Europe, the Arctic or desert.
The resulting Properties, however, such as minimum starting temperature or operational altitude are Properties of the "car" Class and Aspect elements!