nullology

This article explores a workshop at the Worldwide Data Vault Consortium 2026 that highlights the gap between SQL usage and relational theory. It focuses on relational model fundamentals, the challenges of nulls and empty sets, and the implications for data update practices and auditability. The workshop emphasizes the importance of the Closed World Assumption over SQL’s three-valued logic. These insights are critical for data architects and modelers aiming to maintain trust and clarity in complex data environments.