Why sql used??

Answer 1

https://www.sololearn.com/learn/SQL/1849/

Answer 2

sql is used for managing large databases by storing them in form of tables , records etc so useful information can be easily retrieved,modified or deleted easily☺
/*think U have a large school , how would u manage records of each student ... , will u use books papers ... information can get losted with time , also it will take a large space & for searching record of a student will take a good amt. of time*/

Answer 3

To execute queries on databases, useful for logging in , getting data for users, storing data, creating and deleting tables etc etc