Question
What is the difference between a PRIMARY KEY constraint and a UNIQUE constraint? How can you verify the constraints that exist for a table? A
What is the difference between a PRIMARY KEY constraint and a UNIQUE constraint?
How can you verify the constraints that exist for a table?
A table can have a maximum of how many PRIMARY KEY constraints?
Which type of constraint can be used to make certain the category for a book is included when a new book is added to inventory?
Which type of constraint should you use to ensure that every book has a profit margin between 15% and 25%?
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Oracle 12c SQL
Authors: Joan Casteel
3rd edition
1305251032, 978-1305251038
