$3$C is a consulting company in Newark. It needs a database to keep track of the

assignment of employees to projects. For each employee, $3$C wants to record an

employee ID $($unique for every employee$),$ name, address, and birthday. For each project,

$3$C wants to record a project ID $($unique for each project$),$ project name, and start date.

Employees are included in the database even when they have not been assigned to any

project. A project must have at least one employee assigned. An employee$$s billing rate

$($the price they charge client for their services$)$ may vary by projects, and $3$C wishes to

record the applicable billing rate for each employee when assigned to different projects

$($Hint: Search relationship attributes$)$