Instances of the entity subclasses are named, often with several different aliases. Instances of the entity subclasses normally have one or more descriptive names in addition to a unique identifier. Instances of the entity subclasses are often referenced individually by name or as the value of a property of another entity instance. Almost all applications are designed to start with a specific entity or a set of entities. Core entities in your application domain are normally defined as direct subclasses of Entity .
Entity classes represent objects that are named.
Every entity subclass has a corresponding naming dictionary that allows you to reference specific instances by one or more identifiers. The properties name , shortName , sortCode , and numericCode are defined for the class. The class Classification has been defined as an abstract subclass of Entity to organize subclasses which are used for grouping and summarization purposes. This class is included with all Vision installations. Instances of Classification subclasses are normally referenced by other Entity instances.