Answer / Rahul Sirohi

pg_hba (PostgreSQL Host-based Authentication Configuration) is a configuration file used to specify which hosts or networks are allowed to connect to the PostgreSQL server and the method of authentication.

Provide a brief explanation of the functions in postgresql.

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How do I add a foreign key in pgadmin?

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What is the default postgres database?

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How to list the number of database?

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Which key can be used to execute a query in the query editor?

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What is information_schema in postgresql?

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What is the port 5432?

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What is cluster control?

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Are foreign key constraints necessary?

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Is postgresql like oracle?

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How to drop a constraint in postgres?

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What is special about postgresql?

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