Hi, I am preparing for an exam and am working through some past exam papers.
There is a questions that says "show how a key field is used in a relational
database across three (3) database tables". I am assuming that the key field
they refer to is the primary key, but how does it go across 3 tables? I hope
someone can shed some light on this for me, in case a similar question comes
up :-) Many thanks.
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Trish