Learning Goal: I’m working on a databases question and need support to help me learn.
You must submit two separate copies (one Word file and one PDF file) using the Assignment Template on Blackboard via the allocated folder. These files must not be in compressed format.
It is your responsibility to check and make sure that you have uploaded both the correct files.
Zero mark will be given if you try to bypass the SafeAssign (e.g. misspell words, remove spaces between words, hide characters, use different character sets, convert text into image or languages other than English or any kind of manipulation).
Email submission will not be accepted.
You are advised to make your work clear and well-presented. This includes filling your information on the cover page.
You must use this template, failing which will result in zero mark.
You MUST show all your work, and text must not be converted into an image, unless specified otherwise by the question.
Late submission will result in ZERO mark.
The work should be your own, copying from students or other resources will result in ZERO mark.
Use Times New Roman font for all your answers.
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2 Marks |
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Learning Outcome (1): Explain the concepts and architectures involved in the database development. |
Question One
List the three main types of constraints in the relational model and explain each in your own words. List the Basic operations for changing the database and explain why the DELETE operation may violate only the referential integrity and not the entity constraint.
Answer:
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2 Marks |
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Learning Outcome(4): Instructors: Create Entity-Relationship model, Relational model, and write SQL queries. |
Question Two
Your client, a retail company, has approached you for assistance in optimizing their inventory management system. They need a database schema to track product inventory, suppliers, and orders efficiently. Design an Entity-Relationship (ER) diagram to represent this system, considering the following entities and their attributes:
Product: Attributes may include ProductID, Name, Description, Price, and Quantity.
Supplier: Attributes may include SupplierID, Name, Contact, Address.
Order: Attributes may include OrderID, Date, and TotalAmount.
OrderDetails: This is a relationship entity representing the details of each order, such as the quantity of each product ordered.
Consider the relationships between these entities and ensure that your ER diagram reflects these connections accurately. Your diagram should illustrate how products are supplied by suppliers, how orders are placed, and the details associated with each order.
Answer
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2 Marks |
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Learning Outcome(1): Instructors: Explain the concepts and architectures involved in the database development. |
Question Three
Identify and explain the various types of database users and their roles in a database system. Choose one type of user (e.g., end-users, database administrators, application programmers) and elaborate on the specific tasks and responsibilities associated with that user role. Discuss how the interaction of different user types contributes to a database system’s overall functionality and efficiency. Finally, provide a real-world example or case study where the collaboration of different types of database users played a crucial role in the success or failure of a database project. Ensure your response reflects a deep understanding of the roles and responsibilities of database users.
Answer:
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2 Marks |
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Learning Outcome(5): Instructors: Design a database starting from the conceptual design to the implementation of database schemas. |
Question Four
You are tasked with designing a conceptual database schema for the King Fahad General Hospital. The system needs to store information about Patients, Doctors, Departments, and Medicines. Explain in detail the fundamental database concepts you would consider during the design phase. Discuss the importance of entities, attributes, and relationships. Additionally, outline your proposed database architecture’s potential challenges and benefits, considering factors such as scalability and data integrity.
Answer:
