A Question on my test review that i need help with please.
The following are the main entity types of the academic institution database. For each entity type, we provide some of the corresponding attributes. Use this information in order to: (a) Build an Enhanced E-R diagram; (b) Transform the Enhanced E-R diagram to a relational database. Identify the primary key(s) and the foreign key(s) for each relation. Draw the relational integrality constraints; (c) For each of the relations created, indicate its normal form. If the relation is not in the 3NF, decompose it into 3NF relations.
1. Instructor: The main attributes are identification number, name, address, name of the department and college s/he is working for, area of specialty, etc.
2. Course: The main attributes are course number, name, prerequisites, number of credit hours, group of courses it belongs to, etc.
3. Student: The main attributes are identification number, name, address, birthday, gender, department and college s/he is in, etc.
4. Classroom: The main attributes are room number, name of the building, capacity, and description of any special feature (for example, media equipment, computers, video, etc.).
5. Period: The main attributes are period number, start time, and end time.
6. Assignment: This is an associative entity. Its attributes are number of students taking a particular course taught by a particular professor during a particular time period.
Note that the relation between students and courses is a many-to-many relationship. Students get a grade for each course they take.
Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.
You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.Read more
Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.Read more
Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.Read more
Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.Read more
By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.Read more