What a layer or table can support. none means temporal history is
unavailable; the richer modes are additive (rollback implies diff,
history, and as_of are also offered). Capability discovery is
server-owned — clients must not infer a mode from the presence of fields.
What a layer or table can support.
nonemeans temporal history is unavailable; the richer modes are additive (rollbackimpliesdiff,history, andas_ofare also offered). Capability discovery is server-owned — clients must not infer a mode from the presence of fields.