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STUDENT PowerPoint PPT Presentation


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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.

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STUDENT

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Student

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.


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