Question

In the table Enrollments (studentID, courseNo, sectionNo, grade, status), which of the following functional dependency is true?

Answer 1

Without additional context, the true functional dependency for the Enrollments table cannot be identified, but it is likely that (studentID, courseNo, sectionNo) -> (grade, status) may be a functional dependency given the typical structure of such a table.

Step-by-step explanation:

In the context of the provided Enrollments table with attributes (studentID, courseNo, sectionNo, grade, status), a functional dependency defines how one set of attributes uniquely determines another attribute within the dataset. The specific functional dependency that is true cannot be determined directly from the information provided, as it would require additional context or constraints that define the relationships between the attributes.

However, commonly in such a table, we might assume a dependency such as (studentID, courseNo, sectionNo) -> (grade, status), meaning that a combination of the student's ID, the course number, and the section number would uniquely determine a student's grade and status for that particular course section. It is important to analyze the given dataset and any accompanying business rules or constraints to ascertain the correct functional dependencies.