There may be a connection that you don’t need in your project. Instead of hitting the delete button and only delete it from SolidWorks, why not use this function to delete the model, files and data from the database all at once.

 ● Using this function on the Menu Bar click TSDConnections as shown below, then select the  Icon.

                 ● Alternately use the  button located on the Command Manager Tool Bar under TSDConnections tab as shown below.

                                                                                                Video Demonstration Link

                                                                  Click this link to go to the TSDConnections Toolbar TSDConnections Toolbar