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Relationship types can have attributes as in entity types. For example, a company wants to keep track of which employee manages which department and then

Relationship types can have attributes as in entity types. For example, a company wants to keep track of which employee manages which department and then an attribute, the start-date, of this one-to-one manager relationship between EMPLOYEE and DEPARTMENT. You should have one such relationship type in the ERD) How many attributes does the relationship type have?

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