M-N relationships cannot be directly represented in the Relational Model,but rather must be represented by two 1-M relationships and a linking or associative table.
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Q1: The referential integrity rule prohibits foreign keys
Q2: Using the extended cross product operator on
Q3: In the project operation of relational algebra,when
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
Q9: Because they are commonly occur,and contain columns
Q10: The natural join operator provides the ability
Q11: The extended cross product operator can only
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