Android transfer sqlite database to USB flash drive from sdcard programatically

I have a custom built Android device which is Single Board Computer with a display unit. It has Android 4.1 installed on it and has a USB port. Within an app I created an sqlite database. I want to transfer the database to a usb flash drive using the aforementioned USB port. I understand Android documentation enough to be able to establish a connection between USB host and Accessory. I am able to detect my flash drive using an intent filter.

The following is a code snippet to transfer a byte array using USB classes.

     private Byte[] bytes
     private static int TIMEOUT = 0;
     private boolean forceClaim = true;

     ...

     UsbInterface intf = device.getInterface(0);
     UsbEndpoint endpoint = intf.getEndpoint(0);
     UsbDeviceConnection connection = mUsbManager.openDevice(device); 
     connection.claimInterface(intf, forceClaim);
     connection.bulkTransfer(endpoint, bytes, bytes.length, TIMEOUT); 

Here a bytearray is transferred using the USB interface. I want to be able to transfer an sqlite database using the same. Is that possible? How can I do it?