Is sql the best and easiest for making database

Answer 1

yes, sql is the standart almost everywhere. It should be important to note that there is a lot of different databases that all uses a slighly different version of sql. Postgres, Oracle, Mysql, Mariadb, Sqlite, Sql server, etc. they all uses sql.

I wouldn't say there are any easiest, I believe you'll have to use one that is best in your situation, like Sql server with a c# app, Mysql with a php website, etc.

Answer 2

Yes.