Big Objects Implementation Guide

Big Objects
Big Objects Best Practices
Define and Deploy Custom Big Objects
Populate a Custom Big Object
Populate a Custom Big Object with Apex
Delete Data in a Custom Big Object
Big Objects Queueable Example
SOQL with Big Objects
Async SOQL
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Populate a Custom Big Object

Use Salesforce APIs to populate a custom big object.
You can use a CSV file to load data into a custom big object via Bulk API. The first row in the CSV file must contain the field labels used to map the CSV data to the fields in the custom big object during import.

Bulk API 2.0 doesn’t support Big Objects.

Note

Re-inserting a record with the same index but different data results in behavior similar to an upsert operation. If a record with the index exists, the insert overwrites the index values with the new data. Insertion is idempotent, so inserting data that already exists won't result in duplicates. Reinserting is helpful when uploading millions of records. If an error occurs, the reinsert reuploads the failed uploads without duplicate data. During the reinsertion, if no record exists for the provided index, a new record is inserted.

For example, this CSV file contains data for import into a Customer Interaction big object.