graph LR subgraph Bronze[Bronze] s0["bronze_load"] style s0 fill:#4ade80,stroke:#333,stroke-width:2px end subgraph Silver[Silver] s1["silver_clean"] style s1 fill:#4ade80,stroke:#333,stroke-width:2px end subgraph Gold[Gold] s2["gold_dim"] style s2 fill:#4ade80,stroke:#333,stroke-width:2px s3["gold_fact"] style s3 fill:#4ade80,stroke:#333,stroke-width:2px s4["gold_agg"] style s4 fill:#4ade80,stroke:#333,stroke-width:2px end s0 --> s1 s1 --> s2 s2 --> s3 s3 --> s4