SQL stands for Structured Query Language and is used to communicate with databases. It can be used for storing, manipulating and retrieving data in databases.

A database is basically just a collection of data. A database usually contains one or more tables with columns and rows.


Some of The Most Important SQL Commands:

  • SELECT – extracts data from a database
  • UPDATE – updates data in a database
  • DELETE – deletes data from a database
  • INSERT INTO – inserts new data into a database
  • CREATE DATABASE – creates a new database
  • ALTER DATABASE – modifies a database
  • CREATE TABLE – creates a new table
  • ALTER TABLE – modifies a table
  • DROP TABLE – deletes a table
  • CREATE INDEX – creates an index (search key)
  • DROP INDEX – deletes an index


Here is a very good website to help you learn more about SQL: https://www.w3schools.com/sql/default.asp

Also, here is a link to a Youtube video that helped me: https://www.youtube.com/watch?v=7S_tz1z_5bA