PostgreSQL: The World's Most Advanced Open-Source Database

PostgreSQL is the most advanced open-source relational database system, known for its reliability, feature robustness, and performance. It supports advanced data types (JSON, arrays, hstore), full-text search, geospatial queries (PostGIS), and extensibility. PostgreSQL is the database of choice for companies like Apple, Instagram, Spotify, and Reddit.

• Most Advanced: Richest feature set of any open-source database
• Growing Fastest: #1 fastest-growing database in recent years
• Enterprise Ready: Handles mission-critical workloads reliably
• Standards Compliant: Best SQL standards compliance
• Extensible: Custom types, functions, and extensions

• Developers: Build sophisticated data-driven applications
• DBAs: Manage production PostgreSQL clusters
• Data Engineers: Process and analyze data at scale
• DevOps Engineers: Deploy and maintain database infrastructure

• Advanced SQL and window functions
• JSON/JSONB data handling
• Full-text search and pg_trgm
• Performance tuning and EXPLAIN
• Replication and high availability
• Backup with pg_dump and pg_basebackup
• Extensions (PostGIS, pg_stat, etc.)
• Connection pooling (PgBouncer)

1. SQL Mastery: Advanced queries, CTEs, window functions
2. Administration: Installation, configuration, maintenance
3. Optimization: Indexing strategies, EXPLAIN ANALYZE
4. Advanced Types: JSON, arrays, custom types
5. Replication: Streaming, logical, high availability
6. Enterprise: Partitioning, monitoring, clustering

• PostgreSQL DBA: €50,000 – €85,000/year
• Database Engineer: €55,000 – €92,000/year
• Senior Data Engineer: €65,000 – €105,000/year