| Input Parameters | Significance |
| DtvLong en1_idn | ident number of the entity 1 of the relation |
| DtvLong en2_idn | ident number of the entity 2 of the relation |
| char *vie_nam | name of the view on the relation |
| Output Parameters | Significance |
| DtvLong *rel_idn | ident number of the relation |
| Return Code | Significance |
| 0 | no error |
| 1 | relation is not registered in DataView |
| -1 | data base error reading the ident number |