[ANN] If You Don't Need "Q", SDB Will Do.

Rob Cozens rcozens at pon.net
Tue Dec 23 10:11:35 EST 2003


>Rob, does "Client/Server" = multi-user?

Aloha Sannyasin,

Yes.

SDB supports two types of record locking. 1.  A database can be set 
to auto lock mode, in which case the record flagged as the user's 
current position is locked to other users until the user changes 
current position or logs off.  This allows a simple, non-persistent 
locking mechanism with no extra scripting.  2.  All pertinent SDB 
commands include record locking/unlocking arguments.  The user can 
lock as many records as desired, and those locks persist until the 
user logs off or the server application shuts down.  SDB dbs also 
include an option to allow users with write access mode "None" (ie: 
read only) to retrieve locked records.  The three write access modes 
are "Exclusive", "Shared", and "None".  No record locking is needed 
if a user logs on with "Exclusive" mode; however no one else can 
access that db in "Exclusive" or "Shared" mode until she/he logs off.

-- 

Rob Cozens
CCW, Serendipity Software Company
http://www.oenolog.net/who.htm

"And I, which was two fooles, do so grow three;
Who are a little wise, the best fooles bee."

from "The Triple Foole" by John Donne (1572-1631)


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