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The qz_ques_catalog table contains all questions. Questionid is the primary key, with question name, question type, and kerberos_name as required fields. All relationships to answers and feedback are associated with this primary key, quesionid.questionID.
(As of 1/30/06, there was a total of 313 unique question owners and 72 of these had more than 25 questions in their pool.)
The association of quizzes with questions occurs in qz_section_questions. The unique secid (from qz_section) is matched with a question key (qcid) - the two foreign keys are the primary key with additional information for the order/sequence of appearance.