XML now lives at the edges: feeds and filings arrive as XML, are validated, flattened into tables and leave as Parquet 129 (JSON, Columnar and Binary Formats) for DuckDB 61,228 and PostgreSQL 1,289 (Analytical SQL and Data Warehouses). These examples join the catalog with JSON, Columnar and Binary Formats's 100,000 sample orders (its orders.jsonl and orders.parquet), using DuckDB 1.5.5, PyArrow 25.0.1 129 and openpyxl 3.1.5.