Populate combobox inside DataGrid from database table

Question

I have WPF DataGrid bound to an SQL server table, one of its columns is comboBox. I want to populate the comboBox from another table. For example: there are two tables - jobs and employees: employees has EmployeeID, EmployeeName, EmployeeJobID jobs has JobID, JobName I want the comboBox in Employee DataGrid to display JobName from jobs table How to do this?