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Joined 2026-09-21 Message
Incoming links: What Is PostgreSQL? in the PostgreSQL documentation
PostgreSQL 2026-11-05
PostgreSQL is an open-source object-relational database management system supporting SQL, database transactions, constraints and extensible data types. It manages stored relations and concurrent access through a server, rather than merely defining a database query language. The project descends from the Berkeley POSTGRES system.[ref]
What Is PostgreSQL? in the PostgreSQL documentation. Preface §1, origins and supported features
For example,
SELECT name FROM samples WHERE reading > 5 requests selected rows without prescribing their physical access path. A database index can accelerate retrieval, while database transactions govern the visibility and consistency of related updates. A database relation has no implicit presentation order: a caller needing sorted rows must request an ordering.[ref]Concepts in the PostgreSQL documentation. §2.2, relations, columns and unspecified row order
These distinctions separate logical results from storage organization and display.