---
title: "PostgreSQL Database — Definition & Engineering Context"
description: "PostgreSQL is an advanced, open-source object-relational database management system (RDBMS) that supports ACID compliance, complex SQL queries, and resilient scaling for business systems."
canonical: https://erpstack.io/glossary/postgres
markdown_url: https://erpstack.io/glossary/postgres.md
publisher: ERPStack
---

# PostgreSQL Database

> **Definition:** PostgreSQL is an advanced, open-source object-relational database management system (RDBMS) that supports ACID compliance, complex SQL queries, and resilient scaling for business systems.

## In depth

PostgreSQL is the industry standard for transactional B2B software. It supports advanced relational features like foreign keys, triggers, compound indexes, and JSON queries. PostgreSQL's extensibility allows it to support time-series data (via TimescaleDB) and cryptographic columns (via pgcrypto).

## How ERPStack applies this

We default to PostgreSQL for core ERP transactional data stores, ensuring absolute financial accuracy, resilient indexes, and easy database auditing.

## Related reading

- [Drizzle ORM](https://erpstack.io/glossary/drizzle-orm)
- [ACID Compliance](https://erpstack.io/glossary/acid-compliance)