-------         ---------      ----------
Regio           Images         ImgThemes
-------         ---------      ----------
RegioID >--|    ImageID >----< ImageID
RegioName  |--> RegioID        ThemeID <----|
                ImageName                   |
-------    |--> InsulaID       ----------   |
Insula     |    RoomID (etc)   Themes       |
-------    |    SourcesID >-|  ----------   |
InsulaID >-|                |  ThemeID >----|
InsulaName      ---------   |  ThemeName
				Sources     |  ThemeCategoryID <-|
                ---------   |                    |
                SourceID <--|  ----------        |
                SourceName     ThemeCategories   |
                Publishers     ----------        |
                PublishYear    ThemeCategoryID >-|
                               CategoryName