Case Sensitivity v13

Keywords and user-defined identifiers that are used in an SPL program are case insensitive. So for example, the statement DBMS_OUTPUT.PUT_LINE('Hello World'); is interpreted to mean the same thing as dbms_output.put_line('Hello World'); or Dbms_Output.Put_Line('Hello World'); or DBMS_output.Put_line('Hello World');.

Character and string constants, however, are case sensitive as well as any data retrieved from the Advanced Server database or data obtained from other external sources. The statement DBMS_OUTPUT.PUT_LINE('Hello World!'); produces the following output:

Hello World!

However the statement DBMS_OUTPUT.PUT_LINE('HELLO WORLD!'); produces the output:

HELLO WORLD!