Updated db restoration instructions

Author: Ayushi

README.md

@@ -4,8 +4,14 @@ This repository contains the quizzes along with their SQL commands for the conce
 
 You can restore the toy dataset  "parch and posey" to your local machines from the file **parch_and_posey_db** using the following steps:
 
-1. Create a new database - `CREATE DATABASE parch_and_posey;`
-2. Restore into the database - `pg_restore -d parch_and_posey /path/to/parch_and_posey_db`
+1. Open Terminal.
+2. Enter PostgreSQL console - `psql` 
+3. Create a new database - `CREATE DATABASE parch_and_posey;`
+4. Restore into the database - `pg_restore -d parch_and_posey /path/to/parch_and_posey_db`
+
+
+**NOTE: The data dump file and the above commands works well with PostgreSQL (may or may not work with MySQL and others).**
+
 
 Now, SQL commands can be used to explore the dataset and run queries on it.