db = mongoClient.db("employeedb09");
^
TypeError: Cannot call method 'db' of null
at C:\Documents and Settings\a531320\My Documents\rest\routes\employee.js:7:22
at C:\Documents and Settings\a531320\My Documents\rest\node_modules\mongodb\lib\mongodb\mongo_client.js:101:20
at C:\Documents and Settings\a531320\My Documents\rest\node_modules\mongodb\lib\mongodb\db.js:267:16
at null.<anonymous> (C:\Documents and Settings\a531320\My Documents\rest\node_modules\mongodb\lib\mongodb\connection\server.js:546:7)
at EventEmitter.emit (events.js:106:17)
at null.<anonymous> (C:\Documents and Settings\a531320\My Documents\rest\node_modules\mongodb\lib\mongodb\connection\connection_pool.js:140:15)
at EventEmitter.emit (events.js:98:17)
at Socket.<anonymous> (C:\Documents and Settings\a531320\My Documents\rest\node_modules\mongodb\lib\mongodb\connection\connection.js:478:10)
at Socket.EventEmitter.emit (events.js:95:17)
at net.js:441:14