Visual Paradigm support generate UML Class Model by analyzing the Entity Relationship Model you defined or from your database. The generated class model can then use to generate hibernate source code. By default each entity will be generated into one class model during the process. But in some situation you may want to have 2 related entities mapped to a single class model for better access of information in your program. In this article we will teach you how generate a single class for 2 entities in your model. Read more

The unique index of an entity guarantees the record to be covered by index key containing no duplicated value, which helps to improve the performance of the database on accessing the data. The unique index is similar to primary key where the only difference is an entity can only have one primary key, but it can multiple unique indices in different column of an entity. In Visual Paradigm you can establish relationship between entities using both primary key and unique index. We will show you how to create relationship between entities using unique index in this article. Read more