Salesforce Data Management - Data Loader - Insert, Update, Upsert, Export, Delete

Use the Data Loader wizards to add, modify, or delete records. The upsert wizard combines inserting and updating a record. If a record in your file matches an existing record, the existing record is updated with the values in your file. If no match is found, a new record is created. When you hard-delete records, the deleted records are not stored in the Recycle Bin and are eligible for deletion. For more information, watch this video by BeginIT and learn all you need to know.