5. What is a relation? 6. What is a relational database? 7. Describe the shorthand representation of the structure of a relational database. lilustrate this technique by representing the database for Colonial Adventure Tours as shown in Figures 1-4 through 1-8 in Chapter 1. 8. How do you qualify the name of a field, and when do you need to do this? 14. Define third normal form. What types of probleme might you encounter using tables not in third normal form? 15. Using the functional dependencies you determined in Question 11, convert the to table to an equivalent collection of tables that are in third normal form. STUDENT (STUDENT NUM , STUDENT LAST NAME, STUDENT FIRST ME ADVISOR NUM, ADVISOR LAST NAME, ADVIBOR PIRST NAME, (COURSE_CODE DESCRIPTION, GRADE) ) changes you would need to make to your answer for Question 11 if the require- 16. List the ne ments change so that a student can have more than one advisor 17. List the changes you would need to make to your answer for Question 11 if the ne ments change so that you must store the year and the semester in which a student took a course and received a grade