All core GIS datasets have complete metadata. In order to view this metadata, you must look at the file in the geodatabase, viewable through ArcCatalog.
Open ArcCatalog > On the left hand side there is a Catalog tree > Expand Database Connections > Double-click GISdatasets.sde > Expand GISdatasets.sde > Click on GIS file of interest > On the right hand side of the screen, click on the Metadata tab (next to Contents and Preview) > You can view the description, spatial information, or attributes of any GIS file in the geodatabase.
Open ArcCatalog > On the left hand side there is a Catalog tree > Expand Database Connections > Double-click GISdatasets.sde > Expand GISdatasets.sde > Click on GIS file of interest > On the right hand side of the screen, click on the Metadata tab (next to Contents and Preview) > You can view the description, spatial information, or attributes of any GIS file in the geodatabase.