The basic entity in
The types in a project are important because they determine what can be done, see Working with Project Data. If the types are Planet, Star and Satellite, you can model star systems. If the types are Organ, Tissue and Cell, you can model living organisms and so on.
The possible relations between two types A and B can be resumed as follows:
- An object of type A cannot contain an object of type B.
- An object of type A can contain an object of type B as a flow.
- An object of type A can contain an object of type B when it is not defined as a flow.
When an object of type A can contain an object of type B, we say that A is the parent of B.
In Rules, you can:
- Add new types and delete existing ones.
- Modify the properties of existing types.
- Change the relations between types, using the context menu or drag-and-drop.
- Define relations as flows.
- Control the visibility of flows.
- Manage type attributes.
To access the rules, click on the Rules panel in Rules and Filters. If the Rules and Filters panel is not visible, you can display it using Rules and Filters in the Show / Hide Panel of the Tools Category. If you are currently viewing the filters, the Rules shortcut should be visible above the Filters panel.
Rules lists the existing types of the meta-model in alphabetical order. This order cannot be modified.
In the next pages, you will find more details on the following topics: