- **Description**: Scans foreign tables or data sources - **Performance**: Depends on the custom implementation. - **Factors**: Implementation-specific costs. - **Cost**: Custom/foreign cost model. - ![[ex_foreign_scan.svg|200x200]] - **Operates on**: [[Result Set]] - **Workloads**: - [[Client]] - [[ClientRead]] - [[ClientWrite]] - [[IO]] - [[DataFileRead]] - [[LWLock]] - [[BufferContent]]