Datasets

A dataset is a loadable unit in Geo Engine. It is a parameter of a source operator (e.g., a GdalSource) and identifies the data that is loaded. Geo Engine supports different types of data, reflected by a DataId, which refers to internal datasets and external data.

Internal dataset

An internal dataset is a dataset that is stored in the Geo Engine. Thus, it is efficiently accessible and can be used in workflows. The dataset is identified by a DatasetId and contains a DatasetDefinition that describes the data. The DatasetId is always a UUID.

External data

An external dataset is a dataset that is not stored in the Geo Engine. Geo Engine accesses it from a foreign location. The dataset is identified by an ExternalDataId that consists of a DataProviderId and a LayerId. While the DatasetProviderId is usually a UUID that identifies the data provider for Geo Engine itself, the LayerId is a string that identifies the layer in the data provider.