```json { "table_name": "ittf_player_info", "primary_key": "Player ID", "candidates": [ { "rank": 0, "partition_key": "Player ID", "partition_key_label": "primary_identifier", "partition_key_reasoning": "Player ID is the unique identifier with RPUV=1.00, uniqueness=1.000, and 37,620 unique values across 37,620 rows. Each player has exactly one record. This is the natural primary key for a dimension table of player attributes.", "clustering_key": null, "clustering_key_label": null, "clustering_key_reasoning": "Dimension tables typically do not require internal sorting. Each player record is independent and accessed by ID lookup.", "world_line": null, "session_column": null, "confidence": "HIGH", "notes": "Classic dimension table structure: one row per player with static/slowly-changing attributes (name, association, gender, birth year, playing style). The table contains 37,620 unique players from international table tennis. No temporal axis exists — this is a snapshot of player master data, not a timeline or state series." } ] } ```