Development of your app is done locally and your database resides locally as well.
When deploying your app to a cloud slot, you are only deploying the model, NOT the database.
So the easiest would be to enter the data in the cloud environment, alternatively you can implement the excel importer module to import the data into the cloud slot after using the excel export button on a grid locally. This works fine if the data can be exported per table and imported per table. If the domain model contains associations then you woould be better of using an xml/json export and import. But as we are talking about 50 records I would simply create the records in the app deployed in the cloud slot.