How to represent "ALL" in Primary Key -foreign Key relationship.
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by Rohit
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Published on 2010-05-31T08:30:27Z
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2010/05/31
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database-design
I have to create a db design to store blacklisted fax numbers. I have created a table and one column of this table is customerID which is a foreign key to table Customer. Now i want to have a faxnumber which is blacklisted for all customers. How should i proceed with this. Should i use Null in this case. Please provide options
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