The function returns the date and time values as UTC time (Coordinated Universal Time).
Values are represented in your hardware platform’s native integer format.
These are subtypes of the four core numeric types in the preceding list.
Now let’s take a closer look at NUMBER and PLS_INTEGER. The NUMBER data-type is by far the most common numeric datatype you’ll encounter in the world of Oracle and PL/SQL programming.
Both the precision and scale values must be literal integer values; you cannot use variables or constants in the declaration.
Legal values for precision range from 1 to 38, and legal values for scale range from -84 to 127.PUT_LINE( 'big made bigger ='