Stream type properties

The structure of a stream type is comprised of two or more properties, which are fields that capture information about your environment over time.

The first property included is almost always a timestamp of type DateTime, which is designated as a key. This key property is used to create a unique identifier for the associated data points. For more information, see Keys.

The subsequent properties that you add to the type represent the data points that you want to associate with the key. These properties can represent things like a temperature reading, water consumption, speed, and so on. When adding each property to the type, you can further define it by associating it with a data type, Unit of Measure (UOM), or both (for more information, see Property type.

Later, when data is written to a stream based on the type, these properties come together to form a data point, which is a group of associated properties organized by timestamp. These different properties come together to form a basis of how to work with your streams later—how data is ingested, stored, processed, and queried.