All the examples of using the Bulk API show how to insert records (including the sample code). This works perfectly but we're also interested in using the API to delete all records of a particular type - basically we have a need to delete and recreate some reference data on a daily or weekly basis.

• Do you need to provide a CSV file if you want to delete all records?
• If you do, what format should the CSV be in (just the Id needed) and any hints on how to get the Ids of 100,000 records without hitting limits?