Functional dependencies: Functional dependency is a term in the relational database theory which refers to a constraint that is located in between the two sets of attributes in a relation from a database. The functional dependencies of the given database are as follows. DEPARTMENT_NUM à DEPARTMENT_NAME ADVISOR_NUM à ADVISOR_LAST_NAME, ADVISOR_FIRST_NAME, DEPARTMENT_NUM COURSE_CODE à DESCRIPTION STUDENT_NUM à STUDENT_LAST_NAME, STUDENT_FIRST_NAME, ADVISOR_NUM STUDENT_NUM, COURSE_CODE à GRADE Relations: The term relation refers to the relationship between the data represented in a row-column format. The relative relations for the given database table is as follows: DEPARTMENT (DEPARTMENT_NUM, DEPARTMENT_NAME) ADVISOR (ADVISOR_NUM, ADVISOR_LAST_NAME, ADVISOR_FIRST_NAME, DEPARTMENT_NUM) COURSE (COURSE_CODE, DESCRIPTION) STUDENT (STUDENT_NUM, STUDENT_LAST_NAME, STUDENT_FIRST_NAME, ADVISOR_NUM) For the database, a new relation is defined as it is mentioned that an advisor can advise any number of students but each student has only one advisor. Therefore, it can be defined as follows: STUDENT_COURSE (STUDENT_NUM, COURSE_CODE, GRADE) The above relations are defined for the condition when an advisor can advise any number of students but the student can have only one advisor. Therefore, it clearly represents that the relation between the advisor and the student is many-to-one relation.

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Chapter 2, Problem 16RQ

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Functional dependencies:

Functional dependency is a term in the relational database theory which refers to a constraint that is located in between the two sets of attributes in a relation from a database. The functional dependencies of the given database are as follows.

DEPARTMENT_NUM à DEPARTMENT_NAME

ADVISOR_NUM à ADVISOR_LAST_NAME, ADVISOR_FIRST_NAME, DEPARTMENT_NUM

COURSE_CODE à DESCRIPTION

STUDENT_NUM à STUDENT_LAST_NAME, STUDENT_FIRST_NAME, ADVISOR_NUM

STUDENT_NUM, COURSE_CODE à GRADE

Relations:

The term relation refers to the relationship between the data represented in a row-column format. The relative relations for the given database table is as follows:

DEPARTMENT (DEPARTMENT_NUM, DEPARTMENT_NAME)

ADVISOR (ADVISOR_NUM, ADVISOR_LAST_NAME, ADVISOR_FIRST_NAME, DEPARTMENT_NUM)

COURSE (COURSE_CODE, DESCRIPTION)

STUDENT (STUDENT_NUM, STUDENT_LAST_NAME, STUDENT_FIRST_NAME, ADVISOR_NUM)

For the database, a new relation is defined as it is mentioned that an advisor can advise any number of students but each student has only one advisor. Therefore, it can be defined as follows:

STUDENT_COURSE (STUDENT_NUM, COURSE_CODE, GRADE)

The above relations are defined for the condition when an advisor can advise any number of students but the student can have only one advisor. Therefore, it clearly represents that the relation between the advisor and the student is many-to-one relation.

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