Consider the relation employee (name, sex, supervisorName) with name as the key. supervisorName gives the name of the supervisor of the employee under consideration. What does the following tuple relational calculus query produce? {e.name | employee (e) } ( x) [ employee (x) x. supervisor Name e. name vx. sex = male ]

Names of employees with a female supervisor

Names of employees with a male supervisor

Names of employees with no immediate male subordinates

Names of employees with no immediate female subordinates

Consider the relation employee (name, sex, supervisorName) with name a

1.	Consider the relation employee (name, sex, supervisorName) with name as the key. supervisorName gives the name of the supervisor of the employee under consideration. What does the following tuple relational calculus query produce? {e.name \| employee (e) } ( x) [ employee (x) x. supervisor Name e. name vx. sex = male ]
A.	Names of employees with a male supervisor
B.	Names of employees with no immediate male subordinates
C.	Names of employees with no immediate female subordinates
D.	Names of employees with a female supervisor
Answer» D. Names of employees with a female supervisor

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