Boolean Logic
- How Boolean Logic Works
This web page uses animated Venn diagrams to visually explain how Boolean logic works.
Search Tips
Subject keywords in LOUIS
Most LOUIS materials on cathedrals are classified under the heading "Cathedrals" or a sub-heading of that category. A few cathedral records appear in a different form in LOUIS/LouFind (Lichfield Cathedral, Lincoln Cathedral). Therefore, it's best to use truncation when searching LOUIS: entering cathedral? into a search box will search for any word variants that begin with the letters preceding the truncation character:
cathedral? searches for cathedral or cathedral
To find general works on cathedrals, search "cathedral?" and [country] as subject keywords in the LOUIS/LouFind Advanced Search box. If you are searching for a specific cathedral, add that to your search as well, as a keyword rather than a subject (so that you get any book or item that mentions your cathedral, even if the item itself isn't exclusively about your cathedral). For example, a search for cathedral? and England as subjects, and Ely as keyword yields the following results:
You can also do a general search for cathedrals in Europe: search cathedral? as subject and Europe as keyword:
Related keywords include
- Architecture, Medieval
- Architecture, Gothic
Search these words as subject keywords; add your cathedral (or Europe) as a keyword to the search. For example:
Architecture, Medieval -- England -- Gloucester
Architecture, Gothic -- France (Rouen)
Architecture, Medieval -- Europe
These same search strategies will often apply for searching databases as well.
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