A value is a scalar a document attribute can hold: a string, an integer, a boolean, or null. Nested attributes are written as key paths, not as map values; see key-value. It is also the type of a literal schema's value, so only these four kinds can be literals.

See also

metadata: the attributes a document carries.

key-value: one attribute assignment.

SetAttributes: the op that writes values.

any: the union of every value.