Regional Labs is a company that conducts research and development work on a contract basis for other companies and organizations. Figure 2-31 shows data that Regional Labs collects about projects and the employees assigned to them. This data is stored in a relation (table) named PROJECT: PROJECT (ProjectID, EmployeeName, EmployeeSalary) Assuming that all functional dependencies are apparent in this data, which of the following are true? ProjectID → EmployeeName ProjectID → EmployeeSalary (ProjectID, EmployeeName) → EmployeeSalary EmployeeName → EmployeeSalary EmployeeSalary → ProjectID  EmployeeSalary → (ProjectID, EmployeeName

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Regional Labs is a company that conducts research and development work on a contract basis for other companies and organizations. Figure 2-31 shows data that Regional Labs collects about projects and the employees assigned to them.

This data is stored in a relation (table) named PROJECT:

PROJECT (ProjectID, EmployeeName, EmployeeSalary)

  1. Assuming that all functional dependencies are apparent in this data, which of the following are true?
  2. ProjectID → EmployeeName
  3. ProjectID → EmployeeSalary
  4. (ProjectID, EmployeeName) → EmployeeSalary
  5. EmployeeName → EmployeeSalary
  6. EmployeeSalary → ProjectID
  7.  EmployeeSalary → (ProjectID, EmployeeName
FIGURE 2-31
Employee Salary
64,000.00
70,000.00
70,000.00
64,000.00
64,000.00
58,000.00
70,000.00
58,000.00
ProjectID
100-A
EmployeeName
Eric Jones
Donna Smith
Donna Smith
Eric Jones
Eric Jones
Eric Parks
Donna Smith
Eric Parks
Sample Data for
Regional Labs
100-A
100-B
200-A
200-B
200-C
200-C
200-D
Transcribed Image Text:FIGURE 2-31 Employee Salary 64,000.00 70,000.00 70,000.00 64,000.00 64,000.00 58,000.00 70,000.00 58,000.00 ProjectID 100-A EmployeeName Eric Jones Donna Smith Donna Smith Eric Jones Eric Jones Eric Parks Donna Smith Eric Parks Sample Data for Regional Labs 100-A 100-B 200-A 200-B 200-C 200-C 200-D
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