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In general, instructors teach 1NF, 2NF, 3NF, and then BCNF.
Well he is directly copying Korth, so that explains the ordering
at 5:46 if this is in BCNF then why not the previous example
When union operation is performed duplicates are eliminated. So dept_name becomes the primary key whereas in the previous example the dept_name is not a primary key.
In general, instructors teach 1NF, 2NF, 3NF, and then BCNF.
Well he is directly copying Korth, so that explains the ordering
at 5:46 if this is in BCNF then why not the previous example
When union operation is performed duplicates are eliminated. So dept_name becomes the primary key whereas in the previous example the dept_name is not a primary key.