Search: Boolean Operators

 

Boolean search operators can be used in Orbis search strings as follows:

 

and Search for entries that contain both A and B.

 

orSearch for entries that contain either A or B.  

 

xor (exclusive or)Search for entries that contain either A or B, but which do not contain both A and B.

 

notThe not operator has several consequences, depending upon its use:

 

not bfinds all entries that do not contain B
a and not bfinds all entries that contain A except those entries that also contain B
a xor not bfinds all entries that contain A and B, or those that contain neither A nor B
       

The operators can be entered in a search string in either of the following ways:

 

click the Search Operator buttons on the Search Pane.
type in the word "and"  "or"  "xor" or "not"

 

The following two search strings will both yield the same results. All entries that contain both "black" and "white" will be retrieved.

 

 black [AND] white

 black and white

 

Orbis can also search for phrases (e.g. "black and white"). See Search Strings: Phrases.

 

Search operators can be combined to form longer search strings.

 
       .

See also:

Search Strings

Search Examples

Using Parentheses

Wildcard Characters