Package Diagram - Elements

Elements

1. Package: It is a general purpose mechanism for organizing model elements & diagrams into groups. It provides an encapsulated namespace within which all the names must be unique. It is used to group semantically related elements. It is a namespace as well as an element that can be contained in other package's namespaces.
2. Class: It is a representation of objects, that reflects their structure and behavior within the system. It is a template from which actually running instances are created. Classes usually describe logical structure of system.
3. Interface: It is a specification of behavior. Implementing classes of an interface class are required to support the behavior.
4. Object: It is an instance of class. It is often used in analysis to represent numerous artifacts and items that exist.
5. Table: It is a stereotyped class.