Move your mouse pointer over the source shape.Enter its name and press Enter to confirm editing. You should see the entity now and it is connected to the source entity. ![]() If you want to create an entity with a one-to-many relationship, select One-to-Many Relationship -> Entity. In Resource Catalog, select the kind of relationship to be created.Release the mouse button at the place where you want the entity to be created.Press on the Resource Catalog button and drag it out.Move your mouse pointer over the source entity.You can create a related entity by performing the steps below: Relationship shows how the entities are related to each other. ![]() Working with relationships Creating an entity with relationship To select all columns within an entity, select any column first, and then press Ctrl-A to select the rest. In case you want to hide the nullable icon (as represented by symbol N) in ERD, you can follow the steps below: Right click on the diagram > Presentation Options > Entity Columns Display Options> Column Constraints Presentation Option> uncheck Show Nullable.
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