| Input Parameters | Significance |
| DtvLong ent_idn | ident number of the entity |
| char *typ_nam | name of the type relation |
| Output Parameters | Significance |
| DtvLong *typ_idn | ident number of the type relation |
| Return Code | Significance |
| 0 | no error |
| 1 | type relation is not registered in DataView |
| -1 | data base error reading the ident number |