Database Design

timer Asked: Jun 6th, 2013

Question description

You just took a job with
a University and have been asked to track some information about the courses
they offer. The previous employee was using a spreadsheet to track this
information. The University is expanding from three classes to three hundred
classes. Enrollment is expected to increase from around 20 students to 5,000.
Your supervisors are not very tech savvy and they simply ask you to continue
maintaining the spreadsheet. Download the spreadsheet labeled final_project.xlsx.

  • Explain the issues that exist with maintaining the data
         in its current form.

  • Explain the process of migrating the data in its
         current form to a well formed data model by highlighting the following in

    • Identify required attributes that need to be tracked

    • Identify functional dependencies

    • Show the redesign in 1NF, 2NF, and 3NF (similar to
            figures 7.29, 7.31, 7.33)

  • Explain the benefits of the data in its new form.

  • Create the E-R diagram of your relational tables using
         MySQL Workbench.

  • Provide the SQL statement required to create at least
         one of your tables.

  • Provide the SQL statement required to delete at least
         one of your tables.

  • Provide the SQL statement required to create a view
         which includes Course #, Course Name, Time, and Days only.

  • Identify at least one index, which you believe would
         improve performance. Explain your choice.

  • Propose some additional data items, which you believe
         may be beneficial to the University if tracked in your database (i.e.
         Descriptions, more info about the instructors and students, departments,
         etc). Describe the steps required to implement these additions.

  • If you add a course description attribute to your
         course table, there may be some performance impacts imposed by the
         addition of this “text” field.

Discuss a physical
design technique to improve the performance of the new course description

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