Postgresql is a fully featured object-relational database management system. it supports a large part of the sql standard and is designed to be extensible by users in many aspects. some of the features are: acid transactions, foreign keys, views, sequences, subqueries, triggers, user-defined types and functions, outer joins, multiversion concurrency control. graphical user interfaces and bindings for many programming languages are available as well.

this package provides the database server for postgresql 9.1. servers for other major release versions can be installed simultaneously and are coordinated by the postgresql-common package. a package providing ident-server is needed if you want to authenticate remote connections with identd.