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Question
In many-to-many relationships between strong entities in a relational database design, which of the following is not true?A) The intersection table is ID-dependent on one of the parents
B) The intersection table is ID-dependent on both of the parents
C) The relationships from the intersection table to the parent tables are identifying relationships
D) The maximum cardinality to the intersection table is always N
Answer
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Related questions
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Suppose you have created a data model for an airline based on a variety of forms, reports, user interviews, data sources, etc. Your client comes forward with a new desired report that includes passenger weights and a relationship between passengers and employees, neither of which is in your E-R diagram. You should ________.
A) create a new, separate E-R diagram with just the new information
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ID-dependent entities are a common type of weak entity.
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An entity that represents something that can exist on its own is called a strong entity.
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