How can i use SQl ?

Question

Still i m learning

Answer 1

You can use SQL to store your application data in a database. Database contains different tables which store different kind of data.
For example if you have an application which stores data of Schools and their students, you would probably have a database called SchoolDB which may contain tables like StudentData, which store student's data like name,age .... or a SchoolCourses, which stores all courses' data.

There are actually many nuances of SQL but the most popular are MYSQL, SQL Server and ORACLE. For personal use I recommend using MYSQL.