Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.

PRB: Cannot Update VFP Free Table Using FoxPro ODBC ISAM Drive


View products that this article applies to.

This article was previously published under Q195907

↑ Back to the top


Symptoms

In systems that do not have MDAC 2.1 installed on them, when you use the FoxPro ODBC ISAM Driver (named "Microsoft FoxPro Driver(*.dbf)" in the ODBC Administrator) for 2.5 or 2.6 tables, it allows you to view the contents of a table created in Visual FoxPro. However, when you try to update or add new records, the following error message might appear:
Operation must use an Updateable Query.

↑ Back to the top


Cause

The older ISAM driver is not able to accurately read the table header of the Visual FoxPro table. Visual FoxPro supplies additional information in the header of the table for links to a database container, which the older ISAM ODBC driver does not accommodate. Snapshot recordsets are updateable as long as the table is in 2.5 or 2.6 format.

↑ Back to the top


Resolution

Microsoft ships a separate Visual FoxPro ODBC driver that enables you to perform updates on all versions of Visual FoxPro tables, whether they are part of a database container (.dbc) or free tables (.dbf). You can get the Visual FoxPro ODBC Driver, as part of the Microsoft Data Access Components (MDAC), by going to the following Web site:

↑ Back to the top


Status

This behavior is by design.

↑ Back to the top


More information

Microsoft Data Access Components version 2.1 replaces the ISAM driver with a stub that informs the user that "The Microsoft FoxPro driver is no longer supported, and has been replaced with the Microsoft Visual FoxPro driver". If an existing ODBC connection is used, the message "Could not find installable ISAM." appears.

You should only use the 2.5 or 2.6 FoxPro ODBC ISAM Driver with tables that were created with earlier versions of FoxPro (that is, before Visual FoxPro 3.0). It is preferable to use the Visual FoxPro driver.

↑ Back to the top


Keywords: kbdatabase, kbdriver, kberrmsg, kbiisam, kbjet, kbprb, KB195907

↑ Back to the top

Article Info
Article ID : 195907
Revision : 6
Created on : 12/3/2003
Published on : 12/3/2003
Exists online : False
Views : 425