Which statement is NOT CORRECT?

SQL is a database language that focusses on how to access and retrieve the data.

In a file$-$based approach, every application had its own query and access procedures, even if they wanted to access the same data.

SQL is a database language to manage DBMSs without having to write a substantial amount of programming code.

SQL is a database language that allows different applications to access different subsets of the data necessary for each application.