what is case insensitive. and case sensitive where it used in SQL?

Question

what is case insensitive. and case sensitive where it used in SQL?

Answer 1

Case insensitive is when it doesn't care if a letter is capitalized or not.

https://stackoverflow.com/questions/153944/is-sql-syntax-case-sensitive

Answer 2

SQL is case insensitive means uppercase and lowercase text can be treated as equivalent in SQL.