| BINDCOL | Internal structure for bound column (SQLBindCol) |
| BINDPARM | Internal structure for bound parameter (SQLBindParameter) |
| COL | Internal structure to describe a column in a result set |
| dbc | Driver internal structure for database connection (HDBC) |
| ENV | Driver internal structure for environment (HENV) |
| stmt | Driver internal structure representing SQL statement (HSTMT) |
| tblres |