| Name | use |
|---|
| _dw_conection | expands to the connection name as it is found in the snapshot |
| _dw_database | expands to the database name as it is found in the snapshot |
| _dw_schema_name | expands to the schema name as it is found in the snapshot |
| _dw_table_name | expands to the table name as it is found in the snapshot |
| _dw_qvd_table_name | expands the table name found in the XML header of the QVD as found in the Origin Tables/Views QVD Table Name |
| _dw_renaming_fields_all | expands the table name found in the XML header of the QVD as found in the Origin Items |
| _dw_fields_all | these are the original field names from the table found in the schema snapshot |
| _dw_lineage_fields_all | for adding tags to fields in the QVD to identify the source of the field |
