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Drawing the Dependency Diagram Using Given Data Set Assignment Answer

Task

Suppose that you have been given the table structure and data shown in Table below, which was imported from an Excel spreadsheet. 

The data reflect that a professor can have multiple advisees, can serve on multiple committees, and can edit more than one journal.

Table 1: Sample PROFESSOR Records

Attribute Name
Sample Value
Sample Value
Sample Value
Sample Value
EMP_NUM
123
104
118
 
PROF_RANK
Professor
Asst. Professor
Assoc. Professor
Assoc. Professor
EMP_NAME
Ghee
Rankin
Ortega
Smith
DEPT_CODE
CIS
CHEM
CIS
ENG
DEPT_NAME
Computer Info.
Systems
Chemistry
Computer Info.
Systems
English
PROF_OFFICE
KDD-567
BLF-119
KDD-562
PRT-345
ADVISEE
1215, 2312, 3233,
2218, 2098
3102, 2782, 3311, 
2008, 2876, 2222,
3745, 1783,
2378
2134, 2789, 3456,
2002, 2046, 2018,
2764
2873, 2765, 2238,
2901, 2308
COMMITTEE_CODE
PROMO, TRAF
APPL, DEV
DEV
SPR, TRAF
PROMO, SPR
DEV
JOURNAL_CODE
JMIS, QED,
JMGT
 
JCIS, JMGT
 

Given the information in Table 1: 

a. Draw the dependency diagram. (3 marks)

b. Identify the multivalued dependencies. (3 marks)

c. Create the dependency diagrams to yield a set of table structures in 3NF. (6 marks)

e. Draw the Crow’s Foot ERD to reflect the dependency diagrams you drew in Part c. (Note: You might have to create additional attributes to define the proper PKs and FKs. Make sure that all of your attributes conform to the naming conventions.) (3 marks)

NOTE

Manually drawing the dependency diagram, or the set of 3NF relations or the relational schema is NOT acceptable.

Rationale

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This assessment task will assess the following learning outcome/s:

  • be able to apply normalisation techniques to optimise a database design.

Answer

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