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Table Relationships

ResolvedVersion 2007

Fri 25 Jul 2008, 16:17 Delegate David said...

David has attended:
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Table Relationships

Best way to describe one-to-many table relationships

Mon 28 Jul 2008, 13:06 Trainer Carlos said...

RE: Table Relationships

Hi David

One way to describe a One-to-Many relationship is:

A Student has only one Maths teacher in any one year.

However the Teacher will have many students

This is the One-to-Many relationship.

In the relationship window the line would go from the Teachers Primary Key(The One) on the Teachers Table to the Teacers Code field(The Many) on the CoursesTaken table

Hope this helps

Carlos

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Training information:

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

Table Relationships

Table Relationships

RE: Table Relationships

Access articles

Access tip:

Deleting duplicate records from a table