As often happens with new types of quizzes, players had lots of
excellent feedback (including corrections) on how the quiz was
presented. Since we plan to offer at least another dozen quizzes
of this type over the next year or so, we want to make sure that
all future "unnecessary" quizzes are unambiguous and easy to
understand. Here is our current idea for how to define the quiz:
Each choice contains a combination of DDL statements and PL/SQL
blocks. A choice is correct if it does not contain unnecessary
code. A piece of code is unnecessary if you can remove it from
the choice without changing the result of running the remaining
code in that choice. Rules for this quiz: - You cannot add
anything to the choice. You can only remove text - and there are
limitations to what can be removed: - PL/SQL is composed of
delimiters, identifiers and literals. Removal of part of a
delimiter or literal is not allowed. You can, however, remove an
entire word (text separated by a delimiter or whitespace) from
an identifier. E