Use high-scale objects when you have a large number of transactions, large objects, or you must store data over a long period. These objects sometimes have different limitations, APIs, or querying behavior than Salesforce common objects do.
Usage: Auditing, tracking, feeds, and historical archives.
Transaction Type: OLTP transactions
Database Storage: Horizontally scalable distributed databases that are non-transactional and scale to hundreds of millions or even billions of records. Big objects can contain data that’s larger than the data that Data Cloud or standard objects support.
Object Type: BO
Object Suffix: __b
Customizable: Yes
Cloud: Any cloud that provides an org. However, Big Objects requires an additional license.
Packaging: Use the deploy() and retrieve() calls to deploy and retrieve a .zip file. Standard AppExchange packaging isn’t available.
Object Examples: FieldHistoryArchive
Documentation: Big Objects Implementation Guide
Reference: Object Reference for the Salesforce Platform
Optimized for: OLTP transactions
Objects: PendingOrderSummary
Documentation: Order Management Implementation Guide
Reference: Object Reference for the Salesforce Platform
Optimized for: OLAP transactions
Object types: DLO, DMO, CIO, DG
Documentation: Data Object Concepts and Schema in Data Cloud
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