A single incremental search field coupled with a decent search engine,
allows to search by name, surname, address, and/or phone number (w/o
dashes), in any order, with maximum efficiency.

Proof of concept: http://icograma.com/raf08/

This mockup, in spanish, is part of a 45' presentation we gave in
the 2008 Microsoft Regional Architect Forum ( summarized english
translation available:  http://icograma.com/articles/raf2008.en.php
).

The database holds around 5,000 clients and 4,000 movies, what was a
typical scenario for a video rental store in our research. Names and
surnames were taken randomly from public listings.

KLM-GOMS shows that a desired contact can be found as the first or
only result in around 5 seconds.

Case: Looking for "Jorge Gonzalez". "Gonzalez" is one of the most
common surrnames in the database.
    We start typing the surname, and get live results sorted by
relevance. [mental preparation: 1.35 secs.]
    By typing "gonz" we already found all the "gonzalez". [type
'gonz', 0.8 secs. mental preparation, 1.35 secs]
    We type 'space' and start typing first name. [type ' jor',
0.8 secs]
    As the query string reaches "gonz jor", we narrowed the search
to just two people named "Jorge Gonzalez".

    With a simple relevance algorythm, the first one should be the
one we most probably want.
    We spent just 4.30 secs.

--

Santiago Bustelo, Icograma
Buenos Aires, Argentina

//// IxDA BA es el primer grupo local en castellano.
//// Te esperamos! http://groups.google.com/group/ixda-ba


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