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Inserting multiple lines into MySQL table from a separate table

I have written written a fund raising campaign module for an application and need help with the final part.  There are three steps in this module and step three is where I'm running into problems.

This fund raising module is part of a larger collection of business modules available when a business logs into an account they have previously set up.

Step one of this module is to create a fund raising campaign. On a form page, the business member creates a fundraiser campaign by entering a name and start and end dates.  When submitted this campaign is entered into a table with this info as well as a unique ID and also collects the user name a unique ID of the business owner.

In step two, the business owner enters other companies that want to be sponsored by the member business to be a part of the fundraiser.  They are inserted into a second table that collects the fundraiser info, the sponsoring member business info and the new sponsored business info. There could be any number of sponsored businesses, five, ten twenty.

The third and final step is to add customers who want to join an opt-in birthday club.  The sponsoring business has a list that has been collected.  Each customer is entered with a name, birthday and email.

When submitted, the customer info needs to be inserted into the birthday club table for each business that had been entered in step two.

So if twenty companies signed on to the fundraiser, each would be inserted into the birthday club table for that customer.

I think that to accomplish this I need to query the table of sponsored companies and create an array to then insert into the birthday club table, along with the sponsoring company.

Any help and direction is appreciated.
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TecTaoMC
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TecTaoMC
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Ray PaseurCommented:
What you need is called a junction table (or similar term).  It is a table that typically contains a minimum of two columns, each being the keys of a row in another table.  By using this table you can establish a many-to-many relationship between elements in other tables, hence the name Relational Data Base.
http://en.wikipedia.org/wiki/Junction_table
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