Storing 2 instants of contact in a seperate table

[Gurj]

Hi, this is my first post to this forum so thank you all in advance..

I am trying to design a database to store information about the Specification required by each customer. And the main problem I am having is how to store 2 instants of ContactID (from CustomerContacts table) in a seperate table called CustomerSpec.

For example each Customer has many contacts,(the Customer data is stored in a table called Customers which has a one to many relationship with the CustomerContacts table) each customer has one and only one Customer spec, and each customer spec needs to have 2 customer contacts, ie. one for Artwork and one production. (it should also be possible to have the same contact for both Artwork and production).

The problem is how to associate these contactId's with the customer spec...(if there was only one Contact per spec I could simply link the CustomerContacts table with the CustomerSpec table and drop ContactID into CustomerSpec as a foreign key.. But I am stuck to how to save more than one ID..

Can you help please..

[kgunnarsson]

Hi, this is my first post to this forum so thank you all in advance..

I am trying to design a database to store information about the Specification required by each customer. And the main problem I am having is how to store 2 instants of ContactID (from CustomerContacts table) in a seperate table called CustomerSpec.

For example each Customer has many contacts,(the Customer data is stored in a table called Customers which has a one to many relationship with the CustomerContacts table) each customer has one and only one Customer spec, and each customer spec needs to have 2 customer contacts, ie. one for Artwork and one production. (it should also be possible to have the same contact for both Artwork and production).

The problem is how to associate these contactId's with the customer spec...(if there was only one Contact per spec I could simply link the CustomerContacts table with the CustomerSpec table and drop ContactID into CustomerSpec as a foreign key.. But I am stuck to how to save more than one ID..

Can you help please..

If i understand you correctly . You would be able to Create an table called CONTRACT_LINK(Contract_id , Customer_id , Spec_id)
the table would then only have foreign keys to , Customer Table , CustomerSpec table and the Contracts table.