```json { "table_name": "component_staleness", "primary_key": "id", "candidates": [ { "rank": 0, "partition_key": "id", "partition_key_label": "primary_identifier", "partition_key_reasoning": "id is the unique identifier with RPUV=1.00 and uniqueness=1.000, perfectly identifying each staleness record. As a dimension table, the primary identifier serves as the partition key.", "clustering_key": null, "clustering_key_label": null, "clustering_key_reasoning": "Dimension tables typically do not require clustering keys as they are reference data without internal ordering requirements.", "world_line": null, "session_column": null, "confidence": "HIGH", "notes": "This is a dimension table tracking component staleness flags. The id column uniquely identifies each staleness record. While flagged_at exists as a timestamp, the table's primary purpose is to serve as a reference for which components are stale, not to track temporal evolution. The composite nature (dataset_id + component) could form a natural key, but id is the designated primary identifier." } ] } ```