_Xray_instrument.Sf_framecode
| Description | A label that uniquely identifies the X-ray instrument from other X-ray instruments listed in the entry. |
| Details: | |
| name of the parent saveframe (necessary for NMR-STAR to relational database mapping) | |
| Parent saveframe | Xray_instrument |
| Data type | framecode |
| DB table | Xray_instrument |
| DB column | Sf_framecode |
| DB type | VARCHAR(127) |
| NULL allowed | no (mandatory) |