Module 2 & 3 DMA

Paper , Order, or Assignment Requirements

  1. After reading the chapter 2 and the given video clips in Module 2&3, write your reflection on the topics you selected.

 

  1. Draw ER diagrams for both questions by using any tool you selected. If you use paper and pencil, make sure your diagram is clear. A document scanner app such as Office Lens is recommended to take the photo of your answers to remove noise.

 

ER 1. Apple stores would like to keep track of sales, product, and inventory information. Assume you have been asked to design a database to achieve this goal. Make any assumptions if you deem it necessary. Based on the given receipt, answer the following questions:

 

  1. List all possible entities. Explain why you select these entities and why you give up some entities.
  2. How do you make your decision to name your relationships/connectivity?
  3. Draw your ER diagram and their relationships. Make sure you pay attention to ERD notations and naming conventions.

 

ER 2. Mr. Mark Zuckerberg is the CEO and co-founder of social networking website Facebook. A private company would like you to analyze his public posts including images, posts, comments, emotions, links, etc. to better understand his interests, interactions with people, and even his personality. Before analyzing the data, you are required to develop a database to store the required information. Based on the given website, https://www.facebook.com/zuck, answer the following questions:

 

  1. How will you collect the data? Explain it in details. (Hint: Think of API or Web crawler).
  2. List all possible entities. Explain why you select these entities and why you give up some entities.
  3. Draw your ER diagram and their relationships. Make sure you pay attention to ERD notations and naming conventions.

Leave at least two comments on other students’ posts. Your comments must be meaningful, logically sound, and limited grammatical errors. You will not receive your grade by answering “I agree,” “very good,” etc. without any examples and explanations.

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