If one does a search using the Boolean search
strategy "multicultural AND spirituality," the earliest relevant article found was published in 1992 (Pate & Bondi).
The specially designed keyword engine was equipped to handle and, or and not Boolean operators; allowed the user to set the proximity for Boolean searches
to word, sentence, paragraph, heading, and article levels; and included wild-card capabilities.
Current Contents eSearch then transforms the Boolean search
into a probabilistic one by adding weighting and relevance criteria.
A drawback to all of the free sources was the inability to conduct complex Boolean searches
and remove duplicates.
Within each of these fields, the user can enter a complex Boolean search
, as well as an asterisk (*) for truncation.
The chapter on search engines is a condensed and updated version of Hock's previous book, with quick overviews of how search engines work and how to construct a Boolean search
. He profiles AlltheWeb, AltaVista, Google, HotBot, and Teoma in some detail, with a handy chart comparing their features.
A simple Boolean search
on GaLtieri and FaLkLand IsLands retrieves 21 entries tracing the Argentine leader's political background, involvement, sentencing, and eventual pardon.
Access features include Boolean search
, name and subject indexes, and a powerful attribute search capability.
Many familiar fee-based databases provide value-added features, such as indexed fields, subject descriptors, and Boolean search
syntax that help pinpoint an industry overview article.
If searchers use a Boolean search
screen, they will get Web links as part of their answer sets.
Users only need to type in their search terms to do a Boolean search
It remains a Boolean search
screen and each of the three options--Single Find Field, Single Find Field with Search Builder, and Guided-Style Find Fields--offers search history, an SDI and alert capability, and the new spell-check feature.