Why Flat Tables Fail: Understanding Many-to-Many Relationships in Practice

This technical narrative illustrates why flat database tables fail in practice: they cannot adequately represent many-to-many relationships. Oran's discovery that batches have multiple inspections and use multiple material lots challenges the simple one-row-per-batch model. The story reveals that embracing normalization and junction tables upfront prevents costly redesigns and ensures data integrity and traceability in production systems.