Q129642: Buffering Must Be Handled Manually in DBC Rules/Triggers
Article: Q129642
Product(s): Microsoft FoxPro
Version(s): WINDOWS:3.0
Operating System(s):
Keyword(s):
Last Modified: 10-FEB-2000
-------------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Visual FoxPro for Windows, version 3.0
-------------------------------------------------------------------------------
SUMMARY
=======
If you choose to use update, delete, or insert triggers within a Visual FoxPro
database container (DBC), buffering will not be enabled automatically. You must
use the =CURSORSETPROP() function to manually enable the type of buffering
desired.
MORE INFORMATION
================
This behavior is by design. Because automatic implementation of buffering could
cause adverse consequences in some situations, buffering will be set to 1 (no
buffering).
Normally, you would choose to implement row buffering on the parent table, and
table buffering on the child table involved in the relationship.
REFERENCES
==========
For more information on database design and buffering, refer to the Microsoft
Visual FoxPro "Developer's Guide" or to the Microsoft Visual FoxPro
"Professional Features Guide."
Additional query words: VFoxWin
======================================================================
Keywords :
Technology : kbVFPsearch kbAudDeveloper kbVFP300
Version : WINDOWS:3.0
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1986-2002.