PostgreSQL is an object-relational database management system (ORDBMS) and is currently the most powerful, feature-rich and complex free software database system. It originated from the database research program of Berkeley (BSD) and is currently the most important One of the open source database product development projects, it has a very wide range of users. PostgreSQL is the only free software database management system that supports transactions, subqueries, multi-version parallel control systems, data integrity checks and other features. It can be used in It runs on multiple platforms --- including Linux, FreeBSD, Windows, etc. --- and supports multi-language development.
