Visio Files and ConceptDraw
Visio Files and ConceptDraw. ConceptDraw PRO is compatible with MS Visio .VDX formatted files.VDX is Visio’s open XML file format, and it can be easily imported and exported by ConceptDraw PRO.-  Weak Key Attribute 
-  Attribute 
- UML Class Diagram Notation | Design elements - ERD (crow's foot ...
- Design elements - ER diagram (Chen notation) | Chen Notation ...
- Symbol Of  Key Attribute 
- ERD Symbols and Meanings | ERD, Chen's notation - Vector ...
- Chen Notation Optional  Attribute 
- Symbol Of  Weak Attribute 
- Erd Derived  Attribute 
- Entity Relationship Diagram Symbols | ERD Symbols and Meanings ...
- How To Represent Foreign  Key  Chen Notation
- Symbol Of Multivalued  Attribute  In Er Diagram
- Entity Relationship Diagram Symbols | ERD Symbols and Meanings ...
- Derived  Attribute  Er
- Entity Relationship Diagram Symbols | ERD Symbols and Meanings ...
- How To Represent Foreign  Key  In Er Diagram
- Design elements - ER diagram (Chen notation) | Chen ERD ...
- Er Diagram With Unique  Key 
- ERD Symbols and Meanings | Components of ER Diagram | Entity ...
 
                                     
                             
                             
                             
                            