```json { "table_name": "samples", "table_type_tags": [ {"tag": "dimension", "confidence": 0.95} ], "primary_type": "dimension", "insufficient_evidence": false, "entity": { "columns": ["id"], "unique_per_row": true }, "time_axis": null, "reasoning": "The entity id has Uniqueness 1.000 (every row unique), making this a dimension table. The table catalogs sample data rows extracted from various source tables (tables_catalog_id references a sibling catalog table, RPUV 19.92). Each sample is a unique record with its source metadata (row_index, row_json). The provenance columns (_ingestion_timestamp, _batch_id, _source_file, _source_system) are synthetic processing-time columns and carry no evidence of table type. No usable time axis exists beyond provenance. This is a catalog of sample records, each uniquely identified." } ```