Subject GSG014. Thinking About Links
Author Raymond Kennington
Master-Detail Links

First diagram has DETAIL table with Primary Key and Foreign Key.

Doesn't the primary key consist of a pair of field lists that determine uniqueness with
one of the field lists consisting of fields that uniquely identify a record in another

That is, doesn't the definition of primary key for the detail table necessarily contain
all fields?

Is this diagram suggesting that there -ought to- be a unique identifier for each record
rather than unique within distinct master keys?

Raymond Kennington
Programming Solutions
W2W Team B