Consider the relational schema given below, where eId of the relation dependent is a foreign

key referring to empId of the relation employee. Assume that every employee has at least one

associated dependent in the dependent relation.

Employee (empId, empName, empAge)

Dependent(depId, eId, depName, depAge)

Consider the following relational algebra query:

Π_empId(employee)-Π_empId (employee⋈(empId = eID)∧(empAge ≤ depAge)dependent)

The above query evaluates to the set of empIds of employees whose age is greater than that of