Chapter 5 Managing Models

Defining a package

A package is a piece of a model.

When you are working with large models, you can split any model into smaller subdivisions in order to avoid manipulating the entire set of data of the model. Packages can be useful to assign portions of a model, representing different tasks and subject areas, to different development teams.

You can create as many packages as you need in a model. The name of each package must be unique in the model.

Package hierarchy

Packages can be of two types:

Multiple packages: you can create several packages in a model or in a package.
Hierarchical packages: you can decompose a package into other packages and continue this process, there is no limitation in decomposition depth. At each level of decomposition you can create several diagrams.

Packages work as models, they can contain the following items:

Model objects
Other packages
Diagrams, in order to have different views of the contents of the package. Each package appears with a default diagram window