A software contract and consultancy firm maintains details of all the various projects in which its employees are currently involved. These details comprise:

• Employee Number
• Employee Name
• Date of Birth
• Department Code 
• Department Name
• Project Code
• Project Description 
• Project Supervisor

Assume the following:

• Each employee number is unique.
• Each department has a single department code.
• Each project has a single code and supervisor.
• Each employee may work on one or more projects.
• Employee names need not necessarily be unique.
  Project Code, Project Description and Project Supervisor are repeating fields.

Normalise this data to Third Normal Form.