The HERE platform stores data in catalogs. A catalog is a collection of data layers, that are logically managed, and access controlled as a single set. Catalogs can contain different types of layers representing different types of stream or batch data. Some layer types are related to each other by catalog version and can be overlaid spatially to construct a complete digital map. For example, a catalog may contain a map that includes layers for road attributes, topology, and signs. While catalogs often contain geospatial data, catalogs can contain any kind of data.
A catalog can contain any combination of layer types. For more information, see Layers. Data in a single region catalog is stored in western Europe only. Data stored in a multi-region catalog is stored in western Europe as the primary region and the western United States as the secondary region. For more information on multi-region replication, see Data security and durability.
The following image shows the structure of catalogs.
Data sharing is controlled at the catalog level. You can share an entire catalog, including all its layers.