Microsoft KB Archive/120130

= ACC: Duplicate Records in dBASE IV File Missing =

Article ID: 120130

Article Last Modified on 1/19/2007

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APPLIES TO


 * Microsoft Access 2.0 Standard Edition
 * Microsoft Access 95 Standard Edition
 * Microsoft Access 97 Standard Edition

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This article was previously published under Q120130



Moderate: Requires basic macro, coding, and interoperability skills.



SYMPTOMS
If you link (attach) a dBASE IV file without selecting an index file, some of the data in the dBASE IV file may appear to be missing when you open the linked table.



CAUSE
You may be using a dBASE IV index file whose "Display First Duplicate Key Only" setting is turned on. This dBASE IV setting causes records with duplicate primary key values to be hidden.



RESOLUTION
Make sure to specify an index in dBASE IV that displays all records, and make sure to select the appropriate index file when you link a dBASE IV file in Microsoft Access.

If the index file and all records are selected correctly, then look for more information on the ISAM settings in the following article in the Microsoft Knowledge Base:

95388 ACC: dBASE SET DELETED Characteristic in Microsoft Access



MORE INFORMATION
When you link a dBASE IV file, you are prompted to select an index file. If you do not select an index file, Microsoft Access selects one for you. When Microsoft Access selects an index file for you, it first looks for an index file with the same name as the data file you are linking. If it cannot find such a file, Microsoft Access then looks for the most recently created or changed index file.

When you let Microsoft Access select the index file for you, you are taking a chance that Microsoft Access will select an index file whose "Display First Duplicate Key Only" setting is turned on. If Microsoft Access selects such an index file, any record in the data file with a duplicate primary key value will be hidden automatically.

Once a primary index file is selected, the only way to use a different index file is to delete the link in Microsoft Access, and then link the table again.

dBASE IV is manufactured by Borland International, Inc., a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

