STUDENT

1. firstname lastname C_add C_phone name street SID C_add_phone city P_add state sex P_add_phone name Enrolls SectionNo class BirthDate SSN degree Phone P_Phone Section OfficeNum Letter_grade Major Minor In DNum Office Belongs_to name Num_grade name semenster year Offer description CNum level hours college SSN STUDENT ZIP M N M 1 Instructor N Teaches N N 1 1 S_Y N Semenster_year N 1 1 N DEPARTMENT COURSE Note: 1. Assume that each student should have exactly one major department, and each student may have none or more minor departments. 2. Assume that each course should be offered by certain department. 3. Assume that each student may have one current address, and each address may have multiple phone numbers. 4. Assume that each student may have one permanent address, and each address may have multiple phone numbers. 5. Assume that each department may have a number of offices, and each office may have many phone numbers. 3. In order to avoid possible redundancy, the Instructor is represented as an entity class with the social security number as key attribute.