CA ERwin Data Modeler User Interface › The Data Modeling Workspace › Logical and Physical Modeling › Model Types

Model Types

A model type presents an interface tailored to the needs of the design layer. For example, logical models will not display target-server specific options; dimensional models have additional options that apply only to warehousing environments, and so forth.

You can create several different model types, which include:

• Logical - a conceptual model that contains objects such as entities, attributes, and key groups.
• Physical - a database-specific model that contains database-specific objects such as tables, columns, and datatypes.
• Dimensional - a model that diagrams the facts and dimensions of a business process in a star schema. This type of model is most often used to diagram data warehouse databases.
• Logical/Physical - a single model that includes both the logical and physical models.

More information:

The Logical Model

Overview of Documenting a Dimensional Model

The Physical Model