Which of the actions would restore a column or row structure?

Create a PL/SQL block to increase salary of employees in department 10. The salary increase is 15% for the employees making less than $100,000 and 10% for the employees making $100,000 or more. Use a cursor with a FOR UPDATE clause. Update the salary with a WHERE CURRENT OF clause in a cursor FOR loop (cursor FOR loop problem).

What will be an ideal response?

De?ne the trigger WatchCourseHistory that uses a table Log to record all changes that transactions make to the various courses in the Course relation.

What will be an ideal response?