To open a Database Manager window, choose one of these options:

• Click on the Database Manager  button on the tool bar in the main window or choose the Tools | Database Manager menu item - an empty Database Manager window will be opened.
  
  
• Or open one or more mass spectra from a file, by choosing the File | Open | Mass Spectrum menu item and the spectra will be loaded into Database Manager.
  
  
• Or start any search from the Search menu and, if a spectrum or structure is found, a Database Manager window will be opened containing search results.

If an empty Database Manager window has already been opened, you cannot open another. Every search dialog window has a check box at the bottom, with the caption Merge Results into Active Database Manager. As the caption indicates, if you activate this check box the search results will be merged at the end of the Spreadsheet in the active Database Manager window. If this check box is unchecked a new Database Manager window will be opened and the search result records will be added to it.