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What is PostgreSQL?

Entry PostgreSQL
Quick Answer PostgreSQL is an open-source, enterprise-grade relational database known for reliability, standards compliance, and advanced features. It supports ACID transactions, complex queries, JSON, full-text search, extensions, and custom data types. Used widely in production for web apps, analytics, and geospatial data (PostGIS). Considered the most feature-rich open-source RDBMS.

Answer

PostgreSQL is an open-source relational database known for reliability, SQL compliance, JSON support, advanced indexing, and ACID transactions.
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This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.

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Source: SugharaIQ

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