Added two use cases

use-cases/BuildingManagement.md

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+# Building Management
+
+**Contributed by:** hylkevds - Fraunhofer IOSB
+
+## Typical user scenario:
+
+A campus of a large organisation has multiple buildings.
+The campus has sensors measuring all sorts of observed properties in rooms, hallways and elevators, on doors and windows.
+To enable complex querying it would be best to have the relations between those Things/Locations fully exposed in the data model.
+
+An example domain data model:
+
+![Building data model](images/Datamodel-Building-Base.drawio.png)
+
+
+
+### Option 1
+
+Squeeze everything into things. 
+
+Advantage: 
+- 100% SensorThings API.
+
+Disadvantages:
+- Makes linking between different items difficult.
+- Everything is in Things, not ideal for domain clients.
+
+### Option 2
+
+Expose the model, mirroring each entity as a Thing:
+
+Advantage: 
+- 100% SensorThings API.
+- Domain clients get the full querying flexibility.
+
+Disadvantages:
+- All domain entities are duplicated, need to be maintained twice.
+- There is a Thing between domain entities and their Datastreams.
+
+![Model next to Thing](images/Datamodel-Building-SensorThings-1.drawio.png)
+
+### Option 3
+
+Replace Things with entities from the model:
+
+Advantage: 
+- Perfect model for domain clients.
+- Domain clients get the full querying flexibility.
+
+Disadvantages:
+- Breaks SensorThings API clients.
+
+![Model Instead of Things](images/Datamodel-Building-SensorThings-2.drawio.png)
+
+### Option 4
+
+Mirror Things from domain entities, using a database view with unions.
+
+Advantage: 
+- 100% SensorThings API.
+- Domain clients get the full querying flexibility.
+- No data duplication.
+
+![Model Instead of Things and Locations](images/Datamodel-Building-SensorThings-3.drawio.png)
+
+
+
+## Actors:
+List of actors that participate in the use case
+1. First Actor
+2. Second Actor
+
+## Preconditions:
+List of conditions required to make the use case possible
+1. First precondition
+2. Second precondition
+3. Third precondition
+
+## Process:
+List of steps taken in completing the use case
+1. First step in process
+2. Second step in process
+3. Third step in process
+
+
+## Required input:
+List of inputs required to satisfy the use case
+1.	First input
+2.	Second input
+3.  Third input
+
+## Output:
+The list of outputs from the use case
+1.	output one
+2.	output two
+
+## Extensions: 
+List of extensions of the use case
+1.	First extention option
+2.	Second extension option
+
+
+
+

use-cases/ChargingStations.md

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+# Smart City Charging Stations
+
+**Contributed by:** HylkeVDS - Fraunhofer IOSB
+
+## Typical user scenario:
+
+A city has many different sensors on-line. One sensor type measures the
+availability of charging stations for electic vehicles. A user looking for a
+parking spot with charging capabilities would like to find a suitable spot
+near his destination, and if none are available, set a subscription so that
+he is notified when a spot becomes available in the geospatial area near his
+destination.
+
+* In v1.1 the user needs to set an individual subscription for each Datastream
+  (parking spot) in the area he is interested in.
+
+
+## Actors:
+List of actors that participate in the use case
+1. First Actor
+2. Second Actor
+
+## Preconditions:
+List of conditions required to make the use case possible
+1. First precondition
+2. Second precondition
+3. Third precondition
+
+## Process:
+List of steps taken in completing the use case
+1. First step in process
+2. Second step in process
+3. Third step in process
+
+
+## Required input:
+List of inputs required to satisfy the use case
+1.	First input
+2.	Second input
+3.  Third input
+
+## Output:
+The list of outputs from the use case
+1.	output one
+2.	output two
+
+## Extensions: 
+List of extensions of the use case
+1.	First extention option
+2.	Second extension option
+
+
+
+

use-cases/LeadInLiverInFishInRiver.md

@@ -1,4 +1,4 @@
-# Use Case title
+# Lead in Liver in Fish in River
 
 **Contributed by:** hylkevds - Fraunhofer IOSB
 

use-cases/SensorsInRooms.md

@@ -1,4 +1,4 @@
-# Use Case title
+# Sensors in Rooms
 
 **Contributed by:** hylkevds - Fraunhofer IOSB