Deleting Duplicate Entries in a "Join" Table

[dnice240]

Hello, and thanks in advance for any help you can provide. I am making a database that keeps track of alumni who have started a company. Alumni can start multiple companies, and companies can be started by multiple alumni.

I have made 3 table. One for companies, one for alumni, and a join table that relates the two. Each person and company has their own unique ID. In my setup, I have a portal that brings in the companies that have been started by the person. My problem is that it is still possible for "Person 1" to have multiple entries of "Company 1." Meaning that my Join table is currently allowing multiple records that have the same Company ID AND Contact ID. How can I make it so it does not allow duplicate entries? Thanks!

[Vaughan]

One way is to limit data entry. Search for "dwindling value lists" in the Forum and on the web.

Basically, after a company has been entered, it no longer appears as a option to enter again.

[comment]

See also:

http://www.fmforums.com/forum/showpost.php?post/249317/