The Querying PostgreSQL Databases course from SIRIAM offers insightful training on intermediate level querying of SQL using PostGreSQL. PostgreSQL or just Postgres, is a relational database that is open source. This ACID-compliant RDBMS is available for various platforms. It is completely transactional in nature and chiefly employs the SQL:2008 standard. PostgreSQL has extensible data types, functions, operators, aggregates, index methods, procedural languages, and a lot of extensions by third parties.
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