The SQL descriptor area is described below
| DCL | 1 | SELDSC, | |
| 2 | SQLDNUM | BIN (31) | |
| 2 | SQLDFND | BIN (31) | |
| 2 | SQLDSC | (N) | |
| 3 | SQLDV | BIN (31) | |
| 3 | SQLDFMT | BIN (31) | |
| 3 | SQLDVLN | BIN (31) | |
| 3 | SQLDFMTL | BIN (15) | |
| 3 | SQLDVTYP | BIN (15) | |
| 3 | SQLDI | BIN (31) | |
| 3 | SQLDH_VNAME | BIN (31) | |
| 3 | SQLDH_MAX_VNAMEL | BIN (15) | |
| 3 | SQLDH_CUR_VNAMEL | BIN (15) | |
| 3 | SQLDI_VNAME | BIN (31) | |
| 3 | SQLDI_MAX_VNAMEL | BIN (15) | |
| 3 | SQLDI_CUR_VNAMEL | BIN (15) | |
| 3 | SQLDFCLP | BIN (31) | |
| 3 | SQLDFCRCP | BIN (31) |