how to validate duplicate record in ms access database in windows base network application..?

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Hi
While developing windows base network application i got problem actually when two user creating records with same database it will accept duplicate record if i am using auto number field as record id so how can i avoid this problem....

Posted 11-Jan-13 6:51am

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Maciej Los 11-Jan-13 12:58pm

We need more details...

Pradeep Shukla 11-Jan-13 13:04pm

From question I guess it is related to the Db not with C#. More details needed.

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Anurag Sarkar · Answer 1 · 2013-01-11T08:04:00

Solution 2

Use Primary Key for validating data.It restricts the numbers to create duplicate values.

Posted 11-Jan-13 8:04am

Anurag Sarkar

Wendelius · Answer 2 · 2013-01-11T07:12:00

Auto numbering field does not protect you from logical duplicates. It just simply provides a new unique value for your record.

To enforce uniqueness for a set of columns you need to either create a unique constraint or index.

For the syntax for creating a unique index, have a look at CREATE INDEX Statement (Microsoft Access SQL)[^]