In Boolean searching, using parentheses to embed a logical operation within another logical operation, thereby indicating the order in which the logical operators or commands are to be executed by a computer (syntax). In the following example, the Boolean "or" command will be executed first, followed by "not" and then "and." Search statement: children and violence and ((television or media) not cartoon*)
a searching structure that involves using parentheses to insure that Boolean operators are performed in the sequence you intend. This technique allows you to build a complex search using two or more operators (AND, OR, NOT).
using parentheses to group Boolean search terms to specify the order of operations e.g. (cat OR feline) and (health OR care)