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PostgreSQL is a powerful, open-source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.

There is a wealth of information to be found describing how to install and use PostgreSQL through the official documentation. The PostgreSQL community provides many helpful places to become familiar with the technology, discover how it works, and find career opportunities.


PostgreSQL Global Development Group

Initial release date

8 July 1996


Written in


Operating system

FreeBSD, Linux, macOS, OpenBSD, Windows

Database Type


License Types

PostgreSQL License (free and open-source, permissive)

Official Website

In this Quiz, you’ll find the most asked and FAQ based PostgreSQL for your next interview.


PostgreSQL can be used from just about any major programming language, including C, C++, Perl, Python, Java, Tcl, and PHP
A meta-command always begins with what?
When you want to use a join between columns that are in the same table, you use what type of join?
What do you call the application that makes requests of the PostgreSQL server?
Which of the following best describes a role:
The most common method to get data into a table is to use what command?
PostgreSQL is
PostgreSQL is
PostgreSQL has many modern features including:
If you don’t specify ASC or DESC, PostgreSQL will assume you want to see results:
A VACUUM operation is used:
The core PostgreSQL source code includes what interfaces?
Unless you specify NOT NULL, PostgreSQL will assume that a column is:
To describe a table in PostgreSQL which of the following is correct:
The value NULL, in database terminology, means?
To create a database in PostgreSQL, you must have the special CREATEDB privilege or
What does the following statement do?
What command allows you to edit PostgreSQL queries in your favorite editor ?
Advisory locks are allocated out of a shared memory pool whose size is defined by the configuration variables…
What is “index bloat”?
total questions: 25





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