- json-slice. Data part of the message contains up to three levels: data set, series and observation. Dimensions and attributes may be attached to any of these three levels. The way this is done in a particular message is documented in the packaging element.
- json-code-index. The data of one data set are not logically grouped by any level or dimension but enumerated in a flat list. Each observation is directly accessible through a specific property key within the data object. Attributes are managed in a similar way and can be attached at any level within the data set, including any combination of dimensions.
- See http://www.sdmx.org for information on SDMX
- See http://www.json.org for information on JSON