Working with References and Logical Sets
A logical set is the ProjectWise-maintained relationship of a master document and its attachments. These relationships commonly include DGN master and their reference documents, or DWG master and their xref documents, but they can include other file types as well. The main document in the relationship to which other documents are attached or linked is referred to as the master document of a logical set. The document icon for a master document will have a white hierarchical tree symbol in the lower right corner of the icon.
The actual attaching of one file to another is performed in your editing application, such as MicroStation or AutoCAD. For example, when you open a DGN or DWG document from ProjectWise and then attach other ProjectWise documents to it in MicroStation or AutoCAD, checking in your changes to the master document automatically creates the logical set in ProjectWise.
When you are in integrated MicroStation and you attach a shapefile to your DGN, ProjectWise will create two sets upon check in of the master DGN — one for the relationship between the master DGN and the attached shapefile, and one for the relationship between the shapefile and its own related files. Similarly, when you attach a raster file to your DGN, and that raster file has its own related files (whether a world file or some other file(s)), ProjectWise again will create two sets upon check in of the master DGN — one for the relationship between the master DGN and the attached raster file, and one for the relationship between the raster file and its own related file(s).
If you are importing DGN or DWG files and their references, or shapefiles and their related files, or raster files and their related file(s), into ProjectWise (whether by dragging them into ProjectWise, or by using ProjectWise's bulk-loading tools), logical sets for those document relationships will not be created (and their document icons will not have the hierarchical tree symbol) until you or your administrator runs the reference scanning wizard on them.