Sample data flow diagram

A rectangle labelled Entity A has an arrow (labelled Data flow 1) that flows to a circle labelled Process 1. From this circle an arrow (labelled Data flow 2) flows to another circle labelled Process 2. From this circle an arrow (labelled Data flow 3) flows into an open rectangle labelled Data store 1. From this open rectangle an arrow (labelled Data flow 4) flows into a circle labelled Process 3. Coming into this circle is an arrow (labelled Data flow 5) that comes from another circle (labelled Process 4) that has an arrow flowing into it (labelled Data flow 6) coming from a rectangle labelled Entity B. From the circle labelled Process 3 an arrow (labelled Data flow 7) flows into a circle labelled Process 5. From this circle an arrow (labelled Data flow 8) flows into an open rectangle labelled Data store 2. From this open rectangle an arrow (labelled Data flow 9) flows into a circle labelled Process 6. From this circle an arrow (labelled Data flow 11) flows into a rectangle labelled Entity C. From the rectangle an arrow (labelled Data flow 10) flows into the circle labelled Process 6.