Suppose you wish to create an audit trail of changes to the takes relation.

a. Define triggers to create an audit trail, logging the information into a relation called, for example, takes trail. The logged information should include the user-id (assume a function user id() provides this information) and a timestamp, in addition to old and new values. Youmust also provides the schema of the takes trail relation.

b. Can the preceding implementation guarantee that updates made by a malicious database administrator (or someone who manages to get the administrator’s password) will be in the audit trail? Explain your answer.