PostgreSQL is an open-source relational database system known for its advanced features and extensibility. It is commonly used in the following domains:

• 1.Geospatial Applications: PostgreSQL's support for geospatial data makes it suitable for mapping and GIS applications.
• 2.Analytics and Reporting: Used for data warehousing and business intelligence applications.
• 3.Scientific Research: PostgreSQL is used in research and scientific applications for storing and analyzing data.
• 4.IoT (Internet of Things): In IoT platforms for collecting and processing sensor data.
• 5.Content Management Systems: PostgreSQL is used as the backend database for some CMS platforms and web applications.