Because they are commonly occur,and contain columns that do not contribute to the uniqueness of a key,it is usually important to identify all possible minimal superkeys when designing a table.
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Q4: M-N relationships cannot be directly represented in
Q5: In the case of a natural join,where
Q6: With regards to referential integrity constraints,a row
Q7: Unary relationships involve multiple tables and are
Q8: Candidate keys that are not primary keys
Q10: The natural join operator provides the ability
Q11: The extended cross product operator can only
Q12: When using a full outer join between
Q13: An advantage of using a constraint name
Q14: The relational algebra operator restrict produces a
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