PostgreSQL Interview Questions and Answers

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PostgreSQL Interview Questions and Answers will guide us about PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS). It is released under a MIT-style license and is thus free and open source software. As with many other open source programs, PostgreSQL is not controlled by any single company, but has a global community of developers and companies to develop it. Learn PostgreSQL by this PostgreSQL Interview Questions with Answers guide

  1. PostgreSQL questions updated at 01 Jul 10 in Category Databases Programming and visited 1963 Times

PostgreSQL Questions and Answers:

1 :: How to create a PostgreSQL user?

CREATE USER usr WITH password 'passwd';
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2 :: How to take backup of database?

/usr/local/bin/pg_dump mydatabase > mydatabase.pgdump
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3 :: How to list the number of database?

su -l pgsql
psql -l
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4 :: How to created a database?

/usr/local/bin/createdb mydatabase
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5 :: Explain about concurreny with the help of MVCC?

Multi version concurrency control is used to manage concurrency. This feature is very useful because changes made in the database will not be visible to other users until the transaction is completed. This removes the need for read locks. ACID principles are given a further boost by this feature and can be implemented in general.
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