Administration of the DTR Content
The content of the Design Time Repository (DTR) is stored in a database. None of the content of the repository will be lost, not even if you delete a resource file. If you, as a developer, work on the repository content, you do this using the Design Time Repository perspective, which shows the content in a hierarchical manner as files and folders of different types. One of these types of folders are the workspaces. Aworkspace contains or refers to a set of resources, each one in exactly one version. This implies that a resource can be referenced in more than one workspace.
The files in one workspace make up one software component. So each workspace corresponds to a state of the sources of the software component.
You can use workspace folders, another type of folders, to organize the workspaces. DTRcan have more than one workspace folder and each workspace folder can accommodate more than one workspace.

You develop a software component named SoftwareComponent2. It is required to exist in different states like Development, Correction and Released. In this case, you can use a workspace folder to bring together the three workspaces of this software component.
The figure below shows an example of a Repository Browser view in the Design Time Repository perspective. The workspace folder SoftwareComp2 is expanded and shows the workspaces 1.0_Cor, cons, and dev:

The root folder contains several workspace folders. Each workspace folder contains one or more workspaces. The resource files in the workspaces are again organized in folders.
Resources can be assigned to workspaces and organized in folders as well. You set up the DTR workspace and workspace folders prior to the start of the development. Since this is supposed to be done only once, some of the Design Time Repository perspective functionality that is related to this point of setting up of the NWDI is hidden. You have to manually activate it if you want to use it more often, or you can choose to use the DTR command line tool for one-time-only setup operations.
● You first create the workspace folders for the development. See Creating Workspace Folder.
● In the workspace folders you create the relevant workspaces. See Creating Workspaces.
● Optionally, you have already have an NWDI that has been set up. This means that now you have to download locally the up-to-date versions of the software on which the development will take place. You only need to synchronize the DTR content to the local PC. More Information: Synchronizing a DC in a Local File System.