Could someone tell me where MS-Access (current and 97?) fit(s) on the
RDBMS - ORDBMS - ODBMS spectrum?
I gather it's relational, but how does it size up against/follow SQL2/3/4
definitions and how does it compare to other database vendors?
Any articles that might be of interest? It's for an essay on database
models...
Thanks in advance,
Alex
--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
Nov 13 '05
29  5908 
<ji********@com pumarc.com> schreef in bericht news:11******** **************@ g43g2000cwa.goo glegroups.com.. . Today I had to reinstall Access 2.0 using the 31 Office 4.3 diskettes
on a machine that got whacked by a virus and had been running a POS app
for about nine years. With moderate trepidation I performed the
install using the ancient 1.44 Meg HD disks. The only file that could
not be read from the disks was MSQUERY.EXE (whew!). All the necessary
functions of the app worked correctly. I did a custom install and
noticed that installing the ISAM drivers was a separate checkbox
option. That seemed to indicate that ISAM in Access went beyond table
seeks, at least in A2. ISAM brings back distant memories of using JCL
on an IBM mainframe and of how nearly everyone failed to realize how
important SQL would become. The page indexing method used by Access
queries is not intuitive. I only realized recently that Access is
using something other than an ISAM style indexing method.
James A. Fortune
You *did* install the "Microsoft Access Version 2.0 Service Pack" also I hope?
Arno R
Arno R wrote: You *did* install the "Microsoft Access Version 2.0 Service Pack" also I hope?
Arno R
No way. Let sleeping dogs lie. I did not want to change anything from
the way it was running before. I did not want to upgrade the code to a
later version of Access, although that would have been mostly changing
DB_OPEN_DYNASET 's to dbOpenDynaset's and having them buy another
version of Access. Had the SP changed anything I would be there right
now fixing it on my own time. The app also printed checks using a dot
matrix printer while keeping a record of the cash flows in the
database. There was just too much potential for something to go wrong.
I'll wait until the install disks have lost enough magnetism to prevent
an install before doing any upgrades to that app.
James A. Fortune
The sp is NOT a later version, it's a jet-upgrade to version 2.5.
Most important feature (From MS-info):
"The Microsoft Jet database engine version 2.5 can repair or recover information in some cases where it was not possible to do so before."
Also a lot of files concerning OLE are changed/upgraded. (And I guess) some othes fixes of the jet-engine.
Well if the app is running fine, it's allright with me, but I have always been very carefull about the jet-version my users use...
I even check the jet-version on startup of all my access 2.0 apps.
Arno R
<ji********@com pumarc.com> schreef in bericht news:11******** **************@ g43g2000cwa.goo glegroups.com.. . Arno R wrote:
You *did* install the "Microsoft Access Version 2.0 Service Pack" also I hope?
Arno R
No way. Let sleeping dogs lie. I did not want to change anything from
the way it was running before. I did not want to upgrade the code to a
later version of Access, although that would have been mostly changing
DB_OPEN_DYNASET 's to dbOpenDynaset's and having them buy another
version of Access. Had the SP changed anything I would be there right
now fixing it on my own time. The app also printed checks using a dot
matrix printer while keeping a record of the cash flows in the
database. There was just too much potential for something to go wrong.
I'll wait until the install disks have lost enough magnetism to prevent
an install before doing any upgrades to that app.
James A. Fortune ji********@comp umarc.com wrote in
news:11******** **************@ g43g2000cwa.goo glegroups.com: Today I had to reinstall Access 2.0 using the 31 Office 4.3
diskettes on a machine that got whacked by a virus and had been
running a POS app for about nine years. With moderate trepidation
I performed the install using the ancient 1.44 Meg HD disks. The
only file that could not be read from the disks was MSQUERY.EXE
(whew!). All the necessary functions of the app worked correctly.
I hope you remembered to apply the Jet 2.5 update -- Access 2.0 was
completely unusable without it, and could corrupt your data badly.
--
David W. Fenton http://www.bway.net/~dfenton
dfenton at bway dot net http://www.bway.net/~dfassoc ji********@comp umarc.com wrote in
news:11******** **************@ g43g2000cwa.goo glegroups.com: Arno R wrote:
You *did* install the "Microsoft Access Version 2.0 Service Pack"
also I hope?
No way. Let sleeping dogs lie. I did not want to change anything
from the way it was running before. I did not want to upgrade the
code to a later version of Access, although that would have been
mostly changing DB_OPEN_DYNASET 's to dbOpenDynaset's and having
them buy another version of Access. Had the SP changed anything I
would be there right now fixing it on my own time. The app also
printed checks using a dot matrix printer while keeping a record
of the cash flows in the database. There was just too much
potential for something to go wrong. I'll wait until the install
disks have lost enough magnetism to prevent an install before
doing any upgrades to that app.
Arno has already posted on this, but it was not an Access update --
it was a JET update. It was even an upgrade to a new version of Jet,
2.5.
And it's MANDATORY.
You can't safely run an Access 2.0 database without it in multi-user
mode at all -- it corrupts and crashes faster than you can imagine.
--
David W. Fenton http://www.bway.net/~dfenton
dfenton at bway dot net http://www.bway.net/~dfassoc
David W. Fenton wrote: ji********@comp umarc.com wrote in
news:11******** **************@ g43g2000cwa.goo glegroups.com:
Arno R wrote:
You *did* install the "Microsoft Access Version 2.0 Service Pack"
also I hope?
Arno has already posted on this, but it was not an Access update --
it was a JET update. It was even an upgrade to a new version of Jet,
2.5.
And it's MANDATORY.
You can't safely run an Access 2.0 database without it in multi-user
mode at all -- it corrupts and crashes faster than you can imagine.
--
David W. Fenton http://www.bway.net/~dfenton
dfenton at bway dot net http://www.bway.net/~dfassoc
When I said upgrade I meant to A97 or later. I realized that the SP
was not a newer version, but I didn't know that the SP was a JET update
only. Your advice is good but the POS runs from the main cash register
by a single user. It will never be multi-user no matter how many cash
registers are added. The POS has a backup system in place. I'm not
going to let the SP anywhere near it.
James A. Fortune
"David W. Fenton" wrote I've never needed the speed of
a .Seek, so I've never used it
myself.
I haven't done any comparison against seek but I have always found that
using a Query or SQL statement that selects a single record works very
nicely in DAO. (But I don't generally work with huge numbers of records in
Jet databases.) Jet seems pretty "smart" in optimizing when it retrieves
data.
Larry Linson
Microsoft Access MVP
"Larry Linson" <bo*****@localh ost.not> wrote in message
news:Slppe.1007 3$KQ2.7131@trnd dc08... "David W. Fenton" wrote
I've never needed the speed of
a .Seek, so I've never used it
myself.
I haven't done any comparison against seek ...<snip>
Then why not do one? Perhaps then you can report back to the group with
something more useful than your usual somewhat cautious and limited posts.
After all - don't you need to do something to earn the MVP tag? ji********@comp umarc.com wrote in
news:11******** **************@ g14g2000cwa.goo glegroups.com: When I said upgrade I meant to A97 or later. I realized that the
SP was not a newer version, but I didn't know that the SP was a
JET update only. Your advice is good but the POS runs from the
main cash register by a single user. It will never be multi-user
no matter how many cash registers are added. The POS has a backup
system in place. I'm not going to let the SP anywhere near it.
I know the problems were most severe in multi-user applications,
where you ended up with corruption almost immediately, but I still
wouldn't run any Access 2.0 installation without it.
I think you're being exremely unwise *not* applying the update. Your
customer should be very nervous.
--
David W. Fenton http://www.bway.net/~dfenton
dfenton at bway dot net http://www.bway.net/~dfassoc
"Bob" <bo*@lalamoomoo .com> wrote in
news:d8******** **@nwrdmz02.dmz .ncs.ea.ibs-infra.bt.com: "Larry Linson" <bo*****@localh ost.not> wrote in message
news:Slppe.1007 3$KQ2.7131@trnd dc08... "David W. Fenton" wrote
> I've never needed the speed of
> a .Seek, so I've never used it
> myself.
I haven't done any comparison against seek ...<snip>
Then why not do one? Perhaps then you can report back to the
group with something more useful than your usual somewhat cautious
and limited posts. After all - don't you need to do something to
earn the MVP tag?
Why don't *you* do the comparisons?
That would then add to your long, long list of constructive
contributions to this newsgroup (which now stands at ZERO, out of a
total of ONE POST, ever).
Is that you, Don?
<plonk>
--
David W. Fenton http://www.bway.net/~dfenton
dfenton at bway dot net http://www.bway.net/~dfassoc This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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