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VFP 6.0 and Access databases
Message
De
30/10/1998 16:31:19
 
 
À
30/10/1998 16:28:02
Information générale
Forum:
Visual FoxPro
Catégorie:
Autre
Divers
Thread ID:
00152909
Message ID:
00153052
Vues:
26
I'm not familiar enough with Access to know....I do know that ZAP is not to be used with remote views. I *think* they might be permanently deleted.

>Hmmmmm, I see zap doesn't delete the remote records.
>I had to do a delete all. Does Access permanently delete these, or are they
>just marked for deletion like in FP?
>
>
>>ODBC *is* slow.....and, yes, use INSERT INTO and UPDATE....you need to use the INSERT INTO for any table with a primary key defined in Access or you will get a very nasty message via ODBC about primary key violation.
>>
>>
>>>OK, everything is working. Man! ODBC is slow.
>>>I'm appending 16,000 records to test speed using:
>>>by
>>>APPEND BLANK
>>>REPLACE ....
>>>REPLACE ....
>>>etc...
>>>
>>>Should I be using UPDATE and INSERT INTO instead?
>>>
>>>
>>>>Kevin
>>>>
>>>>TGIF....I meant 1 not 0. Sorry. Try it all again with 1 (no buffering)
>>>>
>>>>
>>>>>When I have the view open in the current work aread and I do this:
>>>>>lSuccess=CURSORSETPROP("Buffering", 0) I get "Property out of bounds."
>>>>>
>>>>>If I make a change in the browse window and then do TABLEUPDATE(2,.T.) the change appears in the browse. But if I close it and browse again the change is gone. ??
>>>>>
>>>>>
>>>>>>Make sure that there is no buffering with=CURSORSETPROP("Buffering",0) -or-
>>>>>>make sure you issue a TABLEUPDATE(2,.T.) before closing the table.
>>>>>>
>>>>>>>
>>>>>>>OPEN DATA dbc
>>>>>>>CREATE SQL VIEW TWCView;
>>>>>>> CONNECTION TWCustomers SHARE;
>>>>>>> AS SELECT * FROM access.customer
>>>>>>>
>>>>>>>I make changes but they are only saved to the local temp table, not to the actual connected Access database? I thought you could write to the file to?
>>>>>>>
>>>>>>>>Kevin ---
>>>>>>>>
>>>>>>>>Well...Not many, really, if you're just appending records.
>>>>>>>>
>>>>>>>>
>>>>>>>>>Ok, great, just got an ODBC view into an Access database. I have heard that performance with ODBC is pretty bad. If I am just appending records to an ODBC database once a night, I take it performance isn't really an issue. What database functions are hindered with ODBC.
>>>>>>>>>
>>>>>>>>>>It can read/write them as remote views via ODBC. There is no native use of Access databases.
>>>>>>>>>>
>>>>>>>>>>>Does VFP 6.0 import and export to Access databases? Or even better, will it write and read directly to an Access database?
------------------------------------------------
John Koziol, ex-MVP, ex-MS, ex-FoxTeam. Just call me "X"
"When the going gets weird, the weird turn pro" - Hunter Thompson (Gonzo) RIP 2/19/05
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