Data models
Like a package, a data model is used to represent the static structure of a system, particularly the types of objects handled in the system, their internal structure, and the relationships between them.
Data diagrams are used to graphically represent the elements from a data model.
For more details on creating and updating a data model, see The data model.
Example
The data model of the "Purchase Request Automation" project is presented below.
The application manages purchase requests, orders and product stock levels in each of the representation offices.
A centralized catalog of products and suppliers is installed.
Contracts with referenced suppliers are also accessible from the application.