```json { "table_name": "schema_migrations", "table_type_tags": [ {"tag": "dimension", "confidence": 0.90}, {"tag": "path", "confidence": 0.15} ], "primary_type": "dimension", "insufficient_evidence": false, "entity": { "columns": ["version"], "unique_per_row": true }, "time_axis": { "columns": ["applied_at"], "kind": "event_time" }, "reasoning": "The entity version is unique per row (Uniqueness 1.000, RPUV 1.00, Monotonicity 1.000), identifying each database schema migration. Although applied_at timestamps exist (Uniqueness 1.000), each migration is a discrete catalog entry — a thing that happened once and is now recorded — not a state transition of a repeating entity. The table is a catalog of migrations applied to the database schema: dimension. The weak path signal reflects that migrations do form a temporal sequence, but the entity's uniqueness per row and the catalog nature dominate." } ```