![visual paradigm hide nullable icon](https://knowhow.visual-paradigm.com/know-how_files/2011/04/04-show-resources.png)
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Layers - Create multiple diagram layers to better categorize the different kinds of shapes Styles any menu.
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Layers - Create multiple diagram layers to better categorize the different kinds of shapes Styles any menu.
Select the type of diagram that you would like to create and click Next. By visiting our website, you agree to the use of cookies as described in our Cookie Policy. In a database table, a nullable column is one that can have no value assigned to it when inserting or updating a record. Enter the diagram name and description. Now, a brand new diagram is created as the sub-diagram of your selected model element.