![[assets/ex_seqscan.png|256]] - **Description**: Performs a sequential scan of a table. - **Performance**: Scans the entire table, can be slow. - **Factors**: Table size, disk access speed. - **Cost**: `disk I/O cost * table size` - ![[assets/ex_scan.svg|200x200]] - **Operates on**: [[Structures/Table]] - **Workloads**: - [[Workloads/IO]] - [[Workloads/Sub/DataFileRead]] - [[Workloads/Sub/DataFilePrefetch]] - [[Workloads/LWLock]] - [[Workloads/Sub/BufferContent]] - [[Workloads/Sub/BufferMapping]] - [[Workloads/Sub/SyncScan]]