1. Constraints - primary and foreign keys in Oracle Please use speaker notes for additional information!

2. Example of third normal form using a text book company: The textbook company that we are looking at keeps the following information: ISBN number Name of textbook Name of author(s) - frequently there is no primary author Date of publication Price of textbook Publishing company for book Address/phone etc. information about publishing company University, company or other credential Email address for author Authors current agent Email address for agent Address/phone etc. for agent

3. Foreign key Foreign key FK Taking the agent code as another example, having the agent code in the author file designated as a foreign key means that an agent cannot have an agent code that does not appear in the agent table. Taking the author id# key as an example, an author id# cannot be entered in the bridge file if that author id# is not in the author file. The designation of KEY means primary key in these examples. Foreign key

4. Information needed:  Student id#  Name  Major code  Major name  Department chair in major  Address and phone information  Date started at college  Date graduated  Degree awarded  Courses taken - for each course need  Course number  Course name  Credits  Semester/year the course was taken  Grade the student got in the course Data for a simple student record keeping system.

5. Note that the key on the student course file is student id# + course # + semester/year taken. Foreign Key Foreign key