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What would get copied from one table to another to create a relationship between tables?
KurtlyRobertsgp6872
You would have a field of data in one table which has corresponding data in another. In at least one of the tables, depending on the type of relationship, a field would be the primary key. In the other table it would either also be the primary key or be a foreign key, meaning it is the primary key of a different table. The relationships are made by connecting the corresponding fields. They are not always copied as such. Although fields may be corresponding, it is possible to have data in one that is not in the other, though that data may be added later if needed. All relationships can be built before any data is entered into any of the tables. It is part of the design process of the database. All relationships should be defined before data goes in and even before the tables are actually created.
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