Technical Glossary
OLAP vs. OLTP Database Partitioning
Exact Definition
OLAP (Online Analytical Processing) and OLTP (Online Transactional Processing) are database architectures optimized for analytical query aggregation and transactional record speed respectively.
Architectural Deep Dive
OLTP databases (like PostgreSQL) are designed to execute millions of simple, fast queries (e.g., inserting a row, updating a user session). OLAP databases (like ClickHouse) are optimized for scanning billions of rows to calculate averages or sum metrics. Mixing OLAP and OLTP on the same database causes query locks and resource exhaustion, necessitating a separate reporting warehouse.
The ERPStack Approach
We isolate transactional workflows in a PostgreSQL OLTP database and sync analytical events to ClickHouse, keeping customer checkouts fast and dashboard analytics real-time.