Bert the Payroll Guy is about to retire after 40 years and it's time to replace his manual time card system with some sort of computerized database. You have been asked to come up with the database design. As best we can tell, the time card system has the following properties: A timecard contains hours worked and date submitted Each timecard is associated with exactly one employee Each timecard has a unique id Each timecard has a status: approved, not approved, or pending (not examined yet) Each employee has a name, address, and a unique id Each employee submits a time card every pay period. i.e. In 1 year, they will submit multiple time cards Each employee is associated with exactly one manager Each manager is also an employee Each manager is in charge of one or more employees Each manager approves time cards for one or more employees Draw an ER diagram that captures this information.