¶ Entities and resources
The Extremum repository contains two types of data: entities and resources
- The entity is described by the data model, which defines a set of typed properties available to its instances. Entities can refer to each other. Examples of entities are Order and Product.
- A resource is a unit of "opaque" data, such as an image, video, or audio recording. The resource has metadata, such as name and description; this metadata is stored in the platform as an instance of the corresponding entity, such as Image or Video. One resource can have multiple physical representations, for example, an image can be represented in multiple resolutions.