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Hw

  1. 1. <ul><li>Please describe 3 phases if database design
  2. 2. Conceptual
  3. 3. Logical
  4. 4. Physical
  5. 5. What are the differences between conceptual and logical
  6. 6. How do you define the index on a column of a table
  7. 7. Please write a SQL statement about creating index
  8. 8. What is unary, binary, ternary, and quarterly? Give 1 example each
  9. 9. How do you use subclass and super class in ERD?
  10. 10. Please describe 2 common problems when you design a database (example)
  11. 11. What is normalization? How do you use functional dependency? (2NF/3NF)
  12. 12. Please create ERD for the following questions:
  13. 13. A holding company has several company and each company has 4 departments
  14. 14. Every employee only work for 1 department and 1 department only can have 10 employee
  15. 15. Every company has only one main business and every company’s business is different from each other
  16. 16. Please create global ERD for the following question
  17. 17. Big company has several departments, so the employee of the company stay in the 1 room of the apartment
  18. 18. Every apartment has unique names and address and the capacity of the apartment and the number of floors
  19. 19. Every room identify by room number, every employee will be assigned to 1 room of apartment
  20. 20. Every room has a phone number and has a parking lot number
  21. 21. One room may have or may not have a parking lot (NULL), and also each room associated one car number
  22. 22. Normalize the following table to 1NF, 2NF, and 3NF
  23. 23. How the DBS run the query processing?
  24. 24. What is the transaction?
  25. 25. How to ensure the integrity while executing transactions?
  26. 26. What are the property of transaction?

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