1. A horizontal fragment to show staff data in ‘Manager’ position 2. A vertical fragment to show St_Name and Age. 3. A mixed fragment to show St_No and Salary in ‘Assistant’ position

1. A horizontal fragment to show staff data in ‘Manager’ position. σPosition= ‘Manager’ (Staff) 2. A vertical fragment to show St_Name and Age. Π St_Name, Age (Staff) 3. A mixed fragment to show St_No and Salary in ‘Assistant’ position. Π St_No, Salary (σPosition= ‘Assistant’ (Staff))