Beginning SQL

Figure A-2
Notice that Table1 is renamed BooksForSale and that all the columns except ISBN, PublisherCode, and
BookSellerId are deleted. The database is now in second normal form.
Exercise 2 Solution
The FavCategory table links to two other tables: Category and MemberDetails. They are both the primary
tables, the columns in FavCategory being foreign keys. Therefore, you must create two FOREIGN
KEY constraints:
ALTER TABLE FavCategory
ADD CONSTRAINT favcat_cat_fk
FOREIGN KEY (CategoryId)
REFERENCES Category(CategoryId);
ALTER TABLE FavCategory
ADD CONSTRAINT favcat_member_fk
FOREIGN KEY (MemberId)
REFERENCES MemberDetails(MemberId);
Exercise Answers
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