Explain the following Data Flow Diagram. 1. Identify the external entities, processes and data stores. 2. Explain the data flow and its functions Patient Changes to patient information Patient nama- Process Description 1 patient information to update New patient information Find patient Patient information, to print patient information to delete Patient information- Updated patient information Patient name 2 Print patient Delete patient Delete patient 01 Patient information Patient information Process Description Patient report changes to patient information. Doctor