Database Concurrency: MVCC in PostgreSQL vs Row Versioning in SQL Server

What is Concurrency in Databases? Concurrency control ensures that multiple transactions can occur simultaneously without leading to data inconsistency. Two popular concurrency control mechanisms are: MVCC in PostgreSQL PostgreSQL uses MVCC to handle concurrent transactions without locking rows for reads. Instead of overwriting data, it creates a new version of a row for every update. … Continue reading →