Why we need Psql for Rails Development rather using SqlLite as Basic Database?

The Psql is used to update the content live on Server..

To Install the Psql on ur linux Machine open ur terminal on ur linux machine Copy paste the code to install psql on linux machine

  sudo apt-get update  

Update the terminal and copy paste the installation code

  sudo apt-get install postgresql postgresql-contrib

Now that our software is installed, we can go over how it works and how it may be different from similar database management systems you may have used. Switch over to the postgres account on your server by typing:

sudo -u postgres psql

You can now access a Postgres prompt immediately by typing:

psql

Again, you can exit the interactive Postgres session by typing:

 \q

This is a Simple Job to install psql