When modeling data for a project, you can create simple and structured data elements that you can reuse throughout your model. Simple data elements are reusable data types that contain no child dependencies. A simple data element has no structure, and is associated—directly or indirectly—to a primitive type (int, boolean, char, and so forth). Structured data elements are reusable data types that include embedded data types and are containers of simple data elements and other structured data elements.
When creating new simple data elements and structured data elements, see the following topics: