```json { "names": [ { "relation": "fd_fact_47d262d13269", "decision": "name", "name": "transactions_data", "confidence": 0.98, "reason_code": "source_table_grain", "rationale": "The fact table preserves the source grain with one row per transaction, keyed by transaction id and its attributes. It retains the source table's own name." }, { "relation": "fd_dim_121eb124fac2", "decision": "name", "name": "cards", "confidence": 0.95, "reason_code": "key_identifies_entity", "rationale": "One row per card, keyed by card_id with the associated client_id. The card is the entity; card_id is a handle for it." } ] } ```