When converting a narrative problem into an ERD,the narrative usually is a good source from which to derive relationships between entity types.
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Q11: Primary keys for entity types:
A) Can be
Q12: When adding historical details to a relationship,typically
Q13: One of the benefits of transforming an
Q14: In order to make it easier to
Q15: When a 1-1 relationship is converted into
Q17: In order to enforce referential integrity constraints
Q18: The basic rules for converting an ERD
Q19: An associative entity type should be used
Q20: A primary key for an entity type
Q21: Figuer: 
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