The Data Integration Service can read data from Salesforce sources using the Salesforce Bulk API. Use the Bulk API to read large amounts of data from Salesforce while generating a minimal number of API calls.
With the Bulk API, each batch of data can contain up to approximately 1 GB of data in CSV format. When the Data Integration Service creates a batch, it adds any required characters to properly format the data, such as adding quotation marks around text.
You can also monitor the progress of batches in the log file.
To configure a mapping to use the Salesforce Bulk API, select the Enable Bulk Query data object operation read property.