L3 Flashcards
What are the types of users in an IoT domain model?
human user or active digital artifact
What are the entities in the IoT domain model?
Physical entity: any physical object or part of the environment that can be identified, such as humans, rooms, cars, computers
Virtual entity (represent physical entity) is a digital artefact.
What are two types of virtual entities?
Passive digital artefacts: passive software elements such as database entries
Active Digital Artefacts: running software applications
Why is the cardinality 1 for the relationship between virtual entity and physical entity?
Physical entity can be represented by one or more virtual entities but a virtual entity can only be represented by one physical entity.
Why does a virtual entity have an xor relationship with the types of digital artefacts?
Because it cannot be passive and active
What is the use of a device?
relates an object of the physical world to a virtual entity in the digital world
What are the three device categories?
Sensors: monitor and provide information about the PE
Tags: to identify PE
Actuators: to modify the physical state of a PE
What are resources? What are the two types of resources?
Resources: software components that provide data from or are used in the actuation on PE
On-device resources: hosted on devices
Network resources: available somewhere on the network
