ExperimentalReadonly ExperimentalbuffersReadonly ExperimentalidOptional Readonly ExperimentalidentityCache/auth/order/freshness identity; required by normative adapters.
Readonly ExperimentalkindReadonly ExperimentalrowOptional Readonly ExperimentalrowReadonly ExperimentalschemaReadonly ExperimentalsequenceReadonly Experimentalversion
Protocol-neutral, dependency-free transport representation of one columnar record batch. Adapters can reference existing Arrow/GeoArrow buffers and metadata, but consumers still need the originating adapter's layout contract.