Data Sharing
Data Sharing is Lakehouse's zero-copy cross-account data authorization feature. Within the same cloud and service region, it allows granting access to tables or views to other accounts. Data consumers can query in real time without copying data.
Key Features
- Zero copy: Data never leaves the provider's account; consumers read it directly
- Real-time sync: After source data is updated, consumers immediately see the latest data
- Pay-as-you-go: Consumers use their own compute resources without paying for storage
- Revocable: Providers can revoke authorization at any time
Comparison with Other Data Sharing Methods
| Method | Data Copy | Real-time | Applicable Scenarios |
|---|---|---|---|
| Data Sharing (Share) | No copy | Real-time | Cross-account sharing within same cloud and region |
| ETL Sync | Copy required | Has latency | Cross-cloud, cross-system data migration |
| File Export | Copy required | One-time | Offline data exchange |
