Likewise, there are a number of packages that had wise developers who
separated relatively static globals from relatively dynamic globals.  We
really didn't get into that habit until the mid 80's.  The two globals that
grow the fastest and largest are the Orders and the Notes.

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of smcphelan
Sent: Tuesday, June 21, 2005 4:55 PM
To: hardhats-members@lists.sourceforge.net
Subject: Re: [Hardhats-members] VistA global variable partitioning

Having things spread across multiple partitions (or namespaces or volume
sets or whatever) does increase the management complexity of the system.
However routines and business logic will see a VistA database set as one
virtual database.  Thus the tight integration is not an issue.  Now if you
are talking about system management issues that is another concern.  But
those system management concerns overtly do not have any effect upon
executing business logic unless you poorly design that database set.

Bhaskar, I assume you have large bank customers.  I also assume they have
multiple database partitions because putting all data in a single database
can lead to performance issues.  Is this correct?  If so, the reasoning
behind having multiple partitions for the large banks is similar to the
logic for having multiple partitions for a sizable VistA system.  Of course
whether to partition or not would be platform dependent.  How I configure
VistA to run on some Dell servers would be different than running VistA on a
mainframe.

----- Original Message ----- 
From: "K.S. Bhaskar" <[EMAIL PROTECTED]>
To: <hardhats-members@lists.sourceforge.net>
Sent: Tuesday, June 21, 2005 5:55 PM
Subject: Re: [Hardhats-members] VistA global variable partitioning


> Fair enough, Steve.  I thought that with the use of namespaces, VistA
> was well partitioned, but I probably don't understand its interwoven
> intricacies.  I know GT.M, but not VistA.
>
> -- Bhaskar
>
> Tomlinson, Steven B wrote:
> > That all sounds good, my concern, just for the sake of discussion, is
that
> > the routines and business logic may be so tightly integrated across
> > packages/namespaces that the advantages of physically partitioning the
data
> > may not be realized sufficiently to justify the added system
administration
> > overhead of managing multiple databases.
> >
> >
> > Steven B. Tomlinson
> > [EMAIL PROTECTED]
> > Pacific Telehealth and Technology Hui
> > www.PacificHui.org




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