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The provided information offers a detailed description of PostgreSQL, emphasizing its characteristics and capabilities. Here’s a breakdown of the key points:

PostgreSQL: PostgreSQL is introduced as a free and open-source relational database management system (RDBMS). It is notable for its focus on extensibility and adherence to SQL standards.

ACID Properties: PostgreSQL is described as featuring transactions with ACID properties. ACID stands for Atomicity, Consistency, Isolation, and Durability, which are key properties ensuring data integrity and reliability in database transactions.

Database Objects: PostgreSQL is highlighted for supporting various database objects and features, including:

Automatically updatable views: Views in PostgreSQL can be automatically updated when underlying data changes.
Materialized views: Materialized views store precomputed results and can improve query performance.
Triggers: Triggers are used to execute actions automatically in response to specific database events.
Foreign keys: PostgreSQL enforces referential integrity through foreign key constraints.
Stored procedures: Users can define stored procedures to encapsulate business logic within the database.
Scalability: PostgreSQL is noted for its ability to handle a broad range of workloads, from single-machine deployments to data warehouses and web services with a high volume of concurrent users. This scalability makes it suitable for various application scenarios.

Platform Availability: PostgreSQL is available on multiple operating systems, including:

macOS: It is mentioned as the default database for macOS Server.
Windows: PostgreSQL can be installed and used on Windows systems.
Linux: It is compatible with Linux distributions.
FreeBSD: PostgreSQL is available for FreeBSD.
OpenBSD: PostgreSQL can be used on OpenBSD as well.
Overall, the information provides a comprehensive overview of PostgreSQL, highlighting its core strengths as an open-source RDBMS. It emphasizes its compliance with SQL standards, support for ACID transactions, and versatility in handling different workloads. Additionally, PostgreSQL’s availability on various platforms, including macOS, Windows, and various Unix-like operating systems, makes it a flexible choice for developers and organizations seeking a reliable database solution.