| Freezable<T> | Interface for data objects that support being frozen into immutable representations. |
| DataBuffer<T> | Base class for a buffer of typed data. |
| DataBufferIterator<T> | Iterator used to walk a DataBuffer. |
| DataBufferRef | A DataBufferRef provides a pointer to a row in a DataBuffer. |
| DataBufferUtils | Utilities for working with DataBuffer objects. |
| DataHolder | Class for accessing collections of data, organized into columns. |
| DataHolder.Builder | Helper class to build DataHolder instances containing arbitrary data. |