MongoDB Update

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Updating a Collection

To add an employee to department 40:

db.deptCollection.update({'deptno':40}, 
 {$set: 
   {'employees': [   
     {
      empno: 8888,
      ename: 'MARY',
      job: 'LECTURER',
      mgr: 7566,
      hiredate: new Date(),
      sal: 4000
     } 
   ]}
 }
)