PostgreSQL
Most widely used database in fintech powering core banking, payment platforms, and financial applications with ACID compliance.
PostgreSQL is the most widely deployed database in fintech, powering core banking systems, payment platforms, and financial applications globally. Its ACID compliance and row-level security make it the default choice for financial transaction databases requiring regulatory compliance. With the pgvector extension, finance teams can now run AI semantic search directly on their existing PostgreSQL financial data without a separate vector database. TimescaleDB extension adds time-series capabilities for market data, making PostgreSQL a comprehensive data platform for financial institutions of all sizes.
Key Features
- ✓Most widely used database in fintech
- ✓ACID compliance for financial transaction integrity
- ✓pgvector extension for AI and RAG workloads
- ✓Row-level security for multi-tenant financial apps
- ✓JSON support for flexible financial data structures
Pros
- ✓Free and open source — no licensing costs
- ✓ACID compliance non-negotiable for financial data
- ✓pgvector enables AI without a separate vector database
Cons
- ✗Not designed for analytical queries at petabyte scale
- ✗Requires DBA expertise for production tuning
- ✗Horizontal scaling more complex than cloud warehouses
Pricing
Prices are indicative and may vary.