write anomalies

Cognitive Technology Team

Feb 2, 2024 · Databases

Read and Write Anomalies in Concurrent Transactions and Their Mitigation Strategies

This article explains the various read and write anomalies that can occur during concurrent database transactions—such as dirty reads, nonrepeatable reads, phantom reads, lost updates, dirty writes, and write skew—and outlines isolation levels and practical techniques like MVCC, atomic updates, explicit locking, and compare‑and‑set to prevent them.