Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am developing a webapp for an institute and I designed these tables:

enter image description here

Are these tables normalized?

share|improve this question
what is DefineClass? Does it just link the student to the class? – bluefeet Oct 24 '12 at 19:26
Can more than one teacher teach a class together? Explain how Course and Class are different--and whether a course occurs only once or multiple times. – ErikE Dec 24 '12 at 9:17

Are they normalised?


Student has Mob1 and Mob2 fields.

share|improve this answer
thanks,what is your idea about Define class? – Sirwan Afifi Oct 24 '12 at 10:13
i want to Define class for students – Sirwan Afifi Oct 24 '12 at 10:14

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.