Answer / Manpreet Singh Siddhu

PostgreSQL has its roots in the Ingres database management system developed at the University of California, Berkeley in the 1980s. In 1996, a group of developers forked the PostgreSQL project from the existing Postgres project to create a more open-source and community-driven development model. Since then, PostgreSQL has grown into one of the most popular open-source databases.

How do I change the datatype in postgresql?

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Does postgresql have a gui?

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What is the default database in postgresql?

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What is foreign key in postgresql?

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Is primary key indexed by default?

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Does postgres support clustering?

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What is postmaster pid file in postgres?

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What does mvcc mean?

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What is the schema of a table?

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Can we add foreign key without primary key?

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How to check whether PostgreSQL server is up and running?

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How do you run a query in pgadmin 3?

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