To represent an N:M relationship in a relational database design,in essence it is reduced to two 1:N relationships.
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Q18: A default value is the value the
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Q20: The ideal primary key is short,numeric,and fixed.
Q22: To represent a 1:N relationship in a
Q23: To represent an N:M relationship in a
Q24: An intersection table can have additional attributes
Q25: Like all ID-dependent relationships,the parents of an
Q26: An intersection table is always ID-dependent on
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