How to override operations form superclass

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Method overriding is a very common technique in object-oriented programming. It allows developer deliver specific implementation of a method in the subclass although it already defined by the superclass. When overriding a method the subclass replace the implementation in superclass by providing a method which exactly same as the one in superclass, i.e same name, parameter and also the return type. In Visual Paradigm you don’t need to redefine the operation in subclass to model the override. You can simply do it in one click inside the specification dialog. To override the operation: Read more

Why the relationships between entities not point to FK column?

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tomcat-thumbEntity Relationship Diagram (ERD) is a tool for model the structure of a database. It mainly consists of the entity (database tables) as well as the relationships between them. Unlike the traditional UML diagrams, the relationship in ERD not just indicate the entitles are related to each other, it also specifies which column(s) between the source and target entities are linked, which also known as the primary key and foreign key relationship. People often want to have the relationships stick to its associated columns. But instead of manually adjust the connection point for the relationship connector, Visual Paradigm can automatically do it for you.

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Switch from Classic Resource Centric Interface to Resource Catalog

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tomcat-thumbThe Visual Paradigm Resource Centric interface is a handy feature for user to create diagrams without the need to memorize the syntax of the modeling language. It automatically filtered what you can do with the model element you working on in the diagram. In recent release Visual Paradigm enhanced the Resource Centric interface to become the Resource Catalog, which further boost the usability of the Resource Centric interface and make your diagraming task even easier. By default you will be switched to the Resource Catalog interface. But just in case you have missed the switch you can follow the details in this article to change the interface to Resource Catalog.

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Model Entity with Custom Column Types

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tomcat-thumbVisual Paradigm support wide range of databases for user to model the data structure of their systems. Once the data model is done you can generate persistent layer source code in Hibernate and use it as the out-of-the-box data access layer for building your database applications. All the data types which covered by Hibernate are directly supported by Visual Paradigm. But what if your model involved some domain specific data type which not covered by Hibernate? In this case you can make use of the User Type property to model it. To model with non-supported column types:

 

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Why some database data type not available when creating ERD?

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With Visual Paradigm you can model the structure of your database using Entity Relationship Diagram (ERD). When creating ERD you may hit a situation that the data type you wish to pick for your column is not available for you. This probably caused by you haven’t pick the default database for your project. Read more

Why image not being copy from MS Word to Visual Paradigm?

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Every diagram and model element in Visual Paradigm support defining description in rich text. Sometimes you may need to fill in the detail description of the diagram or model element by copy & paste form other sources, where your existing MS Word document is one of the typical source. But in some case the image in your Word document may not being copied to Visual Paradigm…

Copy & paste from MS Word missed image

Copy & paste from MS Word missed image

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How to evaluate advanced feature which not covered in Community Edition

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tomcat-thumbVisual Paradigm Community Edition is a FREE CASE tool for you to create professional-look diagrams in Unified Modeling Language (UML). It is a strip down version of the full Visual Paradigm package. The Community Edition is a good starting point for learning how to UML diagrams. As you get familiar with the software you may interested in other advanced features from the full Visual Paradigm package. Instead of reinstall the software with the evaluation version to try out those features, you can simply turn your Community Edition into evaluation version of the full Visual Paradigm in few clicks.

 

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How to verify the correctness of your downloaded Visual Paradigm software package

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tomcat-thumbIf you found that the Visual Paradigm software package you just downloaded cannot be executed, this could be caused by the file you downloaded was incomplete or corrupted. Visual Paradigm offer MD5 and sha256 checksum to the software packages. With the checksum you can make sure the software package you downloaded is genuine, corrupt-free and safe to use.

 

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Specifying details for your association

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Association is a very comment relationship between classifiers. The association is not a simple connector, it carry lots of information related to the relationships between classifiers. Those information may/may not presented on diagram, but they are vital to the definition of your models. In Visual Paradigm there are several ways to define the details for your association and in this article we will show you one by one. Read more