Showing a server's databases (Model Explorer)
1. Start Model Explorer.
For more information, refer to Starting model explorer.
2. If the server is not shown in Model Explorer, add the server to Model Explorer.
For more information, refer to Adding a server to model explorer.
3. Right-click the Database's server, and then click Show All Databases.
* 
Additional databases may appear if the SQL Server instance that Windchill Modeler uses contains databases for other programs or services.
Model Explorer shows the server's databases for which you have read access. Bookmark the databases you want to work with. For more information refer to Mapping to a database.
Note that when you start Model Explorer, only bookmarked databases are shown by default.