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Which of the following would result in transforming this star schema into a snowflake schema? EmployeeName is a combined field that contains both the employee's

Which of the following would result in transforming this star schema into a snowflake schema?
EmployeeName is a combined field that contains both the employee's first name and last name.
For some employees, their position is not known.
It is possible to have multiple contacts for a vendor.
Weekday, Month, and Year are extensively used for analysis
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