Entity-Relationship Diagram  (ERD)                             
                                                    
                        
                        
                        
                            An Entity-Relationship Diagram (ERD) is a visual presentation of entities and relationships. That type of diagrams is often used in the semi-structured or unstructured data in databases and information systems.   At first glance ERD is similar to a flowch                        
                                            
                            
                                
                                Crow’s Foot Notation                            
                                                    
                        
                        
                        
                            Crow’s Foot Notation solution extends ConceptDraw PRO software with powerful drawing tools, samples and library of predesigned vector Crow's Foot notation icons to help you easy describe the databases using the Entity-Relationship models and design professional-looking ER diagrams based on the popular Crow's Foot notation.                        
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