Final Answer:
In the Entity-Relationship Model (ERM) using Crow's foot symbols, we have identified three main components: entities, attributes, and relationships. The entities include "Student," "Course," and "Enrollment," with attributes such as studentID, courseID, and enrollmentDate. The relationships involve a many-to-many association between "Student" and "Course," captured by the "Enrollment" entity.
Step-by-step explanation:
In our E-R diagram, we represent entities as rectangles, attributes as ovals, and relationships as diamonds. The "Student" entity has attributes like studentID and studentName, while the "Course" entity has attributes such as courseID and courseName. The "Enrollment" entity captures the relationship between students and courses, with attributes like enrollmentDate. The many-to-many relationship is indicated by the crow's foot symbols on both sides of the "Enrollment" entity, signifying that each student can enroll in multiple courses, and each course can have multiple students.
The "Enrollment" entity is crucial in resolving the many-to-many relationship. It acts as an associative entity, breaking down the complex association into two one-to-many relationships between "Student" and "Enrollment" and between "Course" and "Enrollment." This decomposition simplifies the representation and ensures data integrity. The E-R diagram adheres to the guidelines presented in the textbook (p.143, Table 4.4), using Crow's foot symbols for clarity and precision. Through this model, we effectively capture the essential components and relationships within the given problem, facilitating a comprehensive understanding of the system's structure.