Date:         Wed, 14 Jan 2004 13:39:58 -0500
Reply-To:     Sigurd Hermansen <HERMANS1@WESTAT.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Sigurd Hermansen <HERMANS1@WESTAT.COM>
Subject:      Re: Names of things (was Re: [SAS-L] external security managers a
              nd SAS)
Comments: To: Jack Hamilton <JackHamilton@FIRSTHEALTH.COM>
Content-Type: text/plain

Jack:
I have used the term 'cell' to refer to the row/column intersection instance
of a 'relvar' (relational variable). I would define a cell value as a
relation of degree 1 and arity 1. An empty relation would have degree 1 and
arity 0 (a column variable heading but no rows).

In comparisons of different relvars in SQL, say, WHERE x=(select x from y
where z), we have to name the type of yield of the subquery. I see no reason
to avoid the name 'cell'.
Sig

-----Original Message-----
From: Jack Hamilton [mailto:JackHamilton@FIRSTHEALTH.COM]
Sent: Wednesday, January 14, 2004 1:16 PM
To: SAS-L@LISTSERV.UGA.EDU
Subject: Names of things (was Re: [SAS-L] external security managers and
SAS)


"Richard A. DeVenezia" <radevenz@IX.NETCOM.COM> wrote:

>If you know SAS/AF, ModelSCL can be used to provide customized
security down
>to the 'cell' as you call it.  (This applies to only interactive data
access
>using ViewTable)

What would you call a row/column intersection?  Row, Column, Variable,
Observation, and Field all have different meanings.  "Cell" is used in a
handful of statistical and reporting procedures, and in ODS, but not in SQL
or the data step.




--
JackHamilton@FirstHealth.com
Manager, Technical Development
Metrics Department, First Health
West Sacramento, California USA