Why do we use sftp reader-monitor in pipeline

[archana]

If data is present in any file (eg.excel) and we need to make a table out of that excel file in the database, 
we can use sftp reader- monitor combination and do the task easily.                                                                                                                                                                 

Sftp monitor -> 

- There are two paths, monitored path and copy path. 
- It monitors the data coming to the monitored path and cut’s and paste it to the copy path. 
- It sends only the path to the output. 

Sftp reader -> 

- It reads the data from the copy path. 
- This is dependent component, sftp reader will not work without a sftp monitor.