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Create dependency diagrams using the following table, - construct 1NF, 2NF and 3NF tables - determine the primary keys - display what is Partial dependencies
Create dependency diagrams using the following table,
- construct 1NF, 2NF and 3NF tables
- determine the primary keys
- display what is Partial dependencies and what's Transitive dependency on the tables
1. To keep track of students and majors offered by different schools, Millennium College, a new college on the East coast, uses the table structure shown below. Assuming that the sample data are representative, draw a dependency diagram in Visio that shows all functional dependencies including both partial and transitive dependencies. (Hint: Look at the sample values to determine the nature of the relationships.) Attribute Name Sample Value Sample Value Sample Value Sample Value STU_NUM | 211343 | 200128 199876 104934 STU_NAME Kelly Stephanos Julian Smith | Brian Jones Kim Ortiz STU_MAJOR Accounting, | Computer Marketing Marketing Applied Science Information Technology SCHOOL CODE BUSS, ITE ITE BUSS BUSS SCHOOL_NAME Business, Information Business Business Information Technology and Technology and Engineering Engineering MAJOR_DECLARATION_DATE 01/01/2006 05/03/2009 02/09/2005 07/01/2004 01/02/2007 2. Using the initial dependency diagram drawn in question 1, remove all partial dependencies, draw the new dependency diagrams in Visio, and identify the normal forms for each table structure you created. 3. Using the table structures you created in question 2, remove all transitive dependencies, and draw the new dependency diagrams in Visio. Also identify the normal forms for each table structure you created. If necessary, add or modify attributes to create appropriate determinants or to adhere to the naming conventions
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