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Sagot :
Relationship attributes may be necessary for a relationship type of b. many-to-many.
A many-to-many relationship refers to the one where multiple records in a table are associated with multiple records in another table. It represents a type of cardinality that refers to the relationship between two entities. It demonstrates the relationship between tables in a database where a parent row in one table contains several child rows in the second table and vice versa.
The many-to-many relationships frequently mirror the real-life relationship between the objects the two tables represent. A typical example of many-to-many relationships can be denoted as that between students and classes. Since a student can register for many classes and a class can include many students.
Learn more about many-to-many relationships: brainly.com/question/37206767
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