How to prevent duplicate record in VB/ACCess?

The duplicate records here means except the primary ID field (automatically generated), the value of all the field are the same. What is the easy way in Access/VBA to prevent this kind of duplicate records from being saved in the database (a linked Oracle table)? Thanks.
heyday2004Asked:
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tbsgadiCommented:
Hi heyday2004,

In Oracle you should set a unique index (not primary key) on the field


Gary
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Patrick MatthewsCommented:
Hello heyday2004,

To prevent duplicates the best way to go is to create a unique index over the field(s) you need watched.  This
page describes how to create indexes on more than one field in Access:

http://msdn.microsoft.com/en-us/library/bb177891.aspx

The first example shows how to include more than one field in the index.

Regards,

Patrick
0

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shambaladCommented:
You can also use the DISTINCT keyword.
e.g

SELECT DISTINCT InvoiceNbr, CustomerID, InvoiceTotal FROM tblInvoice
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