primary key
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Primary Key

resolvedResolved · Low Priority · Version Standard

replyReply Mon 25 Feb 2008, 15:56Delegate Tony said...

Tony has attended:
Access Introduction course

Primary Key

Please give definition of Primary Key

For upcoming training course dates see: Pricing & availability

replyReply Sat 1 Mar 2008, 10:05Trainer Rich said...

RE: Primary Key

The primary key of a relational table uniquely identifies each record in the table. It must be unique for each record in the table.

 

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Access tip:

Deleting duplicate records from a table

You cannot delete records tables where there duplicate records. A way around this is to create a new table which wont hold the duplicates. and then deleting the old table.

1. Use a make-table query based on this table only. IMPORTANT - Ensure that you include all of the fields from your original table or you may loose data.

2. Open the query's property sheet by using VIEW, QUERY, PROPERTIES, and set the Unique Values property to Yes

3. Because you have selected the Unique Values to Yes when you run the query, Access creates a new table without duplicate records. You can now delete the old table and rename the new one.

View all Access hints and tips


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