The null type has one value, null. It is a primitive of the data model. Its formal schema is attached as the schemaDefinition in this document's metadata, so the app can show it and create values of this type.

See also

none: accepts no values, including null.

value: the scalar values an attribute can hold; null deletes a key.

key-value: how a null value removes an attribute.

any: the union of every value.