Refer also to preceding text and the preceding image description. This image focuses on the same update record, but now shows it with a single 'tuple' row that is blown up to show there is fixed-length data and variable-length data. An arrow pointing from the fixed-length data to the variable-length data indicates the address used to locate variable-length data. Column offsets are shown to be ttXlaColDesc_t -> offset + rowAddress.

End of description.