A repository () is a container for a collection of items and their versions in the database. When the database is created, a first repository is automatically added for you.

You would typically add more repositories to the database if you want to restrict access to a collection of items for a particular set of Users and Groups. By Granting Permissions on the repository, you can, for example, restrict who is able to browse and search the item versions in the repository.

Each repository contains one or more branches. Whenever you add a new repository, an initial Default Branch in that repository is created.

If you have added multiple repositories to the database, Model Manager tries to remember the repository you last accessed in, for example, the Open, Select File, and Select Model windows. You can also set one of the repositories as the default repository (). Analogous to the Default Branch, this is the repository that all save actions targeting the database use by default.

The first repository created in the database is initially set as the default one. To change the default, select the corresponding repository tree node in the Databases tree, right-click, and select Set Default Repository ().

The Settings window for a repository shows:

Clicking the Save button () saves the Name field for the repository.