title: Subtypes (inner entities) in Oracle SQL Developer Data Modeler
body: <p>How to create subtypes in logical model using user interface in Oracle SQL Data Modeler? I have one entity which is "VEHICLE" with atributes such as: date of production etc, and I'd like to add two subtypes: "CAR" and "MOTORCYCLE". I'd like to create imitation of inheritance.</p>
  
  <p>I saw many logical models with such subtypes created in SQL data modeler, but I don't know how to create this. Subtypes should look like two inner entities nested inside "VEHICLE" class with attributes that are different than basic attributes of VEHICLE.</p>