Formulate the following queries in: Relational Algebra.The following tables form part of a database held in an RDBMS:Employee (empNo, fName, lName, address, DOB, sex, position, salary, deptNo)Department (deptNo, deptName, mgrEmpNo)Project (projNo, projName, deptNo)WorksOn (empNo, projNo, dateWorked, hoursWorked)whereEmployee contains employee details and empNo is the key.Department contains department details and deptNo is the key. mgrEmpNo identifies the employee who is the manager of the department. There is only one manager foreach department.Project contains details of the projects in each department and the key is projNo (notwo departments can run the same project).WorksOn contains details of the hours worked by employees on each project, and empNo/ projNo/dateWorked form the key.Formulate the following queries in: Relational Algebra.List all the details of employees who are female and born after 1990.List employee numbers and names of all employees who are not managers and are paid more than $1500.Produce a list of the names and addresses of all employees who work for the IT department.

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Answered: The following tables form part of a…

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Formulate the following queries in: Relational Algebra.

The following tables form part of a database held in an RDBMS:

Employee (empNo, fName, lName, address, DOB, sex, position, salary, deptNo)

Department (deptNo, deptName, mgrEmpNo)

Project (projNo, projName, deptNo)

WorksOn (empNo, projNo, dateWorked, hoursWorked)

where

Employee contains employee details and empNo is the key.
Department contains department details and deptNo is the key. mgrEmpNo identifies the employee who is the manager of the department. There is only one manager foreach department.
Project contains details of the projects in each department and the key is projNo (notwo departments can run the same project).
WorksOn contains details of the hours worked by employees on each project, and empNo/ projNo/dateWorked form the key.

Formulate the following queries in: Relational Algebra.

List all the details of employees who are female and born after 1990.
List employee numbers and names of all employees who are not managers and are paid more than $1500.
Produce a list of the names and addresses of all employees who work for the IT department.

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