Due Week 4 And Worth 75 Points: This Assignment Contains Two

Due Week 4 And Worth 75 Pointsthis Assignment Contains Two 2 Section

This assignment contains two (2) sections: Visio Diagram and Design Summary. You must submit both sections as separate files. Use “Appendix A: Designing Databases with Visio Professional: A Tutorial" to assist with Section 1: Visio Database Design. After reviewing your database design from Lab 1, the college has provided additional details for their database needs:

  • Student Data: Student ID, names, addresses, start date, phone numbers and types (mobile, home, work), email addresses and types (personal, school, work), gender, and birth date.
  • Course Data: Course ID, course name, department, quarters offered, sections, and instructor for each course.
  • Instructor Data: Instructor ID, name, address, phone numbers and types, email addresses and types, gender, birth date, and the courses they are qualified to teach.
  • Grades: Final grades for each student after course completion.

Section 1: Modified Visio Diagram (Microsoft Visio or equivalent)

1. Using Microsoft Visio (or an open-source equivalent):

  • a. Modify your database diagram from Lab 1 to include entities and attributes based on the scenario details provided above.
  • b. Create the appropriate relationships between entities within the diagram.

Format and submit your diagram as a Visio file.

Section 2: Design Summary (Microsoft Word or equivalent)

1. Write a 1-2 page paper discussing:

  • a. How accurately the Visio diagram reflects the intended database design.
  • b. Any assumptions made about the business rules to develop the diagram and relationships.

Format your paper in Times New Roman, 12-point font, double-spaced, with one-inch margins. Include a cover page with the assignment title, your name, professor’s name, course title, and date. Follow APA or your school's formatting guidelines for citations and references.

Paper For Above instruction

The college’s data management requirements necessitate an organized, scalable, and logical database design capable of tracking comprehensive information about students, courses, instructors, and grades. Developing an effective Entity-Relationship (ER) diagram using Microsoft Visio is a fundamental initial step toward building this database. The process involves translating business rules and information needs into entities, attributes, and relationships, ensuring that all relevant data points are appropriately modeled and linked. This paper discusses how the adjusted Visio diagram reflects the database design, and it outlines the assumptions and rationalizations made to finalize the model.

The Visio diagram, based on the scenario provided, effectively captures the core entities—Students, Courses, Instructors, and Grades—each with pertinent attributes. For example, the Student entity includes ID, names, addresses, contact information, gender, and birth date. The Course entity encompasses course ID, name, department, quarters offered, and sections. The Instructor entity records instructor-specific data, such as IDs, names, contact details, gender, birth date, and qualifications. The Grades entity links students and courses to record final grades. The relationships between these entities—as one might expect—are primarily one-to-many: each student enrolls in multiple courses through course sections, each course is taught by one instructor, and each grade is associated with a specific student-course pairing.

The ER diagram’s structure reflects the business rules; it allows for multiple contact numbers or email addresses per entity, demonstrating the model's flexibility. The relationships account for enrollments, assignments of instructors to courses, and grading, which are fundamental to the college's data tracking needs. However, certain assumptions were necessary, including the handling of course sections as a separate entity or attribute, to accurately reflect the scheduling aspect. Given the information, I assumed each course offering in a quarter is a distinct section, requiring a Section entity or attribute to differentiate multiple instances of the same course. Additionally, to accommodate diverse communication modes, contact details were designed as multi-valued attributes or separate related entities, depending on normalization needs.

Overall, the diagram aligns well with the specified business rules and data requirements. It is a logical representation that supports data integrity and facilitates queries related to student performance, course offerings, and instructor qualifications. Minor assumptions, such as the modeling of course sections and contact types, enhance the design’s clarity while maintaining flexibility. These modifications ensure the database can handle real-world scenarios, including multiple contact methods and course scheduling intricacies, making the design robust and comprehensive.

References

  • Chen, P. P. (1976). The entity-relationship model—toward a unified view of data. ACM Transactions on Database Systems, 1(1), 9-36.
  • Hoffer, J. A., Venkataraman, R., & Topi, H. (2016). Modern database management (12th ed.). Pearson.
  • Laudon, K. C., & Traver, C. G. (2016). E-commerce 2016: Business, technology, society. Pearson.
  • Rob, P., & Coronel, C. (2007). Database systems: Design, implementation, & management (8th ed.). Thomson Course Technology.
  • Batini, C., Ceri, S., & Navathe, S. B. (1992). Conceptual database design: An entity-relationship approach. Benjamin/Cummings.
  • Ullman, J. D., & Widom, J. (2008). A first course in database systems (3rd ed.). Pearson.
  • Hoffer, J. A., & Venkataraman, R. (2020). Modern database management (14th ed.). Pearson.
  • Connolly, T., & Begg, C. (2014). Database systems: A practical approach to design, implementation, and management (6th ed.). Pearson.

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