Identifier at the source system for the dataset. Used during import to determine if the entity already exists in the target system (update) or is new (create). Must remain stable in the source system for the same entity. The designation of the dataset Explanation of the dataset Information about the archiving policy and practices for this dataset Legal secrecy classification for the data in this dataset Regulations governing deletion of data in this dataset Historical background of the dataset Objectives and goals of the dataset Indicates whether personal data exists in the dataset and its de-identification status Purpose of the dataset Time period that the data refers to Funding source information Describes the statistical type of study for the dataset URL reference to the dataset Reference to DatasetCollection (belongs to collection)