What You Can Do with the Bulk API

The REST Bulk API lets you query, insert, update, upsert, or delete a large number of records asynchronously. The records can include binary attachments, such as Attachment objects or Salesforce CRM Content. You first send a number of batches to the server using an HTTP POST call and then the server processes the batches in the background. While batches are being processed, you can track progress by checking the status of the job using an HTTP GET call. All operations use HTTP GET or POST methods to send and receive XML or CSV data.

Important

Currently base64 fields are not supported in queries with the Bulk API

 

 

 

 

 In most circumstances, the Bulk API is significantly faster than the SOAP-based API for loading large numbers of records. However, performance depends on the type of data that you're loading as well as any workflow rules and triggers associated with the objects in your batches. It's useful to understand the factors that determine optimal loading time.