CS403P Database Management System (Practical) is the course where database theory turns into a design you can actually build. Assignment 1 for Fall 2026 is built around a university database, and it asks you to draw a complete Entity Relationship Diagram (ERD) for records of students, courses, instructors, departments, and textbooks. If you get the entities and their relationships right, the diagram builds itself. If you get even one relationship wrong, the whole design starts to break when you turn it into tables.
The solution file linked below walks through the full design step by step. It starts from the scenario, identifies every entity, gives each entity its attributes and primary key, works out the relationships between the entities, and finishes with the complete ERD in Chen notation. It also explains how each many to many relationship becomes tables you can actually create in a database. Use it to check your own diagram, to understand why each relationship is drawn the way it is, and to prepare for similar ERD questions in quizzes and exams. It is written as a study reference, so read it with understanding rather than treating it as something to submit without reading.
What Does the Solution File Cover?
The file covers the complete ERD for the university database. It follows the standard method taught in the course: extract the entities from the problem statement, find the attributes and primary key for each entity, identify the relationships among the entities with their cardinality, and then construct the final diagram with correct notation. All five entities named in the scenario are included, and every relationship is justified rather than just stated.
Which Entities Are in the Diagram?
The five entities are Student, Course, Instructor, Department, and Textbook. Student represents a student enrolled at the university, with StudentID as the primary key. Course represents a course offered by the university, with CourseID as the primary key. Instructor represents an instructor who teaches courses, with InstructorID as the primary key. Department represents an academic department that offers courses, with DepartmentID as the primary key. Textbook represents a textbook used in a course, with TextbookID as the primary key. Each entity also carries sensible attributes, such as names, emails, and course codes, so the diagram is complete and ready to turn into tables.
How Are the Relationships Defined?
All four relationships in this design are many to many (M:N). Student registers for Course: one student can register for many courses, and one course can have many students. Instructor teaches Course: one instructor can teach many courses, and one course can be taught by many instructors, for example across different sections. Department offers Course: one department can offer many courses, and one course can be offered by many departments, for example when a course is cross listed. Course uses Textbook: one course can use many textbooks, and one textbook can be used by many courses. The ERD shows these with diamond shapes for the relationships and M and N labels on each side.
Why Do Many to Many Relationships Need Junction Tables?
A relational database cannot store a many to many relationship directly between two tables, so the design introduces a junction table for each relationship. Registration connects Student and Course, Teaching connects Instructor and Course, Offering connects Department and Course, and CourseTextbook connects Course and Textbook. Each junction table holds the two primary keys as foreign keys. With these tables in place, every M:N relationship becomes two one to many relationships, which is exactly how you would build this database in practice. The solution file lists all four junction tables so you can take the design straight into implementation.
How Do You Download the Solution File?
You can download the complete solution file from Google Drive using the link below. The file is a Word document because VU accepts assignments only as .doc or .docx files, so the solution is provided in the same format you will submit. It contains the entity identification, the attributes and primary keys, the relationships with reasons, the final ERD, and the junction tables for implementation.
How Should You Use This Solution?
A solution file helps most when you use it to learn, not just to submit. Read the relationship explanations first and compare them with your own diagram. If your diagram differs, work out which version matches the scenario better before you finalize anything. Fill in your own name and student ID on your submission, and save your file with your VU ID, since that is how VU expects assignment files to be named. Also check your answers against the exact assignment file on VULMS, since question wording can vary.
- Download the file and read the full design explanation before you start your own diagram.
- Check each relationship and its cardinality against the scenario description.
- Fill in your own name and student ID on your submission and save the file with your VU ID.
- Rewrite the explanation in your own words where your instructor expects original work.
- Keep the file for revision, because ERD questions return in midterm and final term exams.
For more study material, you can download course handouts from the VU handouts page and compact revision notes from the VU short notes page. Past papers are also useful for ERD practice, and you can find them on the VU midterm past papers page.
Frequently Asked Questions
Is this the complete solution for CS403P Assignment 1 Fall 2026?
Yes. The file covers the complete ERD for the university database, including all five entities, their attributes and primary keys, all four many to many relationships with reasons, the final diagram, and the junction tables needed to implement the design in a relational database.
Can I submit this solution file as it is?
You should treat it as a study reference. Add your own name and student ID, save the file with your VU ID, check it against your own assignment file on VULMS, and understand every relationship before submitting. Submitting work you do not understand is risky if your instructor asks about it later.
Why are all four relationships many to many?
Because in each case both sides can have many of the other side. Students take many courses and courses have many students, instructors teach many courses and courses can have many instructors, departments offer many courses and courses can be cross listed across departments, and courses use many textbooks while textbooks serve many courses. That is the definition of a many to many relationship, and the junction tables resolve it for implementation.
What format does VU accept for this assignment?
VU accepts assignments only as .doc or .docx files for this assignment. Scanned images, PDF files, and zip files are not accepted. That is why the solution file is provided as a Word document, ready for you to adapt with your own details and submit on VULMS.
Last updated: October 2026.
