Generally, the model relates to the core part of data models in which classes appear as objects.

The social model also relates to economics.

From the superstar athlete, top model or pop sensation to the everyday consumer, everyone can relate to having at least two sides.

Most models relate the decision to change prices changes to menu costs.

Moreover, the model relates various aspects of the interaction process to the phases of the development and implementation lifecycles.

Empirical models relate management and environmental factors directly to soil loss and/or sedimentary yields through statistical relationships.

This means that the model relates the current value of a time series which one would like to explain or predict to both:

Unimodal models to relate species to environment.

The models described above relate economic change to fertility change.

The designer must also choose models to relate the constraints and the objectives to the design variables.