Image description: QSAM format-S records
This image shows the layout of QSAM format-S records.
A format-S record has the following content:
- Block descriptor field
- 4 bytes. The first 2 bytes contain the length of the block, including the 4-byte block descriptor field. The second 2 bytes are reserved for system use.
- Segment descriptor field
- 4 bytes. The first 2 bytes contain the length of the record or segment, including the 4-byte segment descriptor field. The second 2 bytes are reserved for system use.
- Data record or segment
- The data record or segment.
End of image description.