You would need to change the backend to use the MongoDB driver instead of the SQLite one, connect to your MongoDB database instead of using SQLite database files and then store the documents using the MongoDB driver API.
Since MongoDB is a NoSQL document storage database, the changes you'd have to make to the code are significant.
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You would need to change the backend to use the MongoDB driver instead of the SQLite one, connect to your MongoDB database instead of using SQLite database files and then store the documents using the MongoDB driver API.
Since MongoDB is a NoSQL document storage database, the changes you'd have to make to the code are significant.