data class diagram is to describe the relationship between key data entities (or classes) in the enterprise. This diagram was developed to clearly show these relationships and to help understand the underlying data model of the enterprise.
This diagram is in a high-level representation (conceptual). Here, we are interested in modeling the main business entities, their attributes and relationships. The persistence model (usually used for RDB) will be inferred at the application layer later. The TOGAF class diagram defined by
is in the early conceptual stage. The highest level allows to express the basic business concepts of an enterprise without being affected by the unique organizational or historical complexity of each organization. This conceptual level enables you to think about the business in order to define the ideal organization related to this particular business. These entities will be used to define business processes (products processed by the process) and will be derived to define service application components, exchange data between services and repository data patterns.
The main business entities and their relationships in the field of travel discounts
Business entities: describe the semantics of entities in the business, independent of any considerations (such as storage, technology, etc.).
Enterprise entity (developed form): It also displays an attribute here, which is an attribute that the entity may have.
The association between the two classes. The association has a name, and the role name and the cardinality (the number of possible occurrences) of the relevant element are provided at the end of each.
