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What does a directed line ( →)from a relationship set to two entity sets mean?(a) One-one(b) Many-one(c) Many-many(d) One-manyThis question was posed to me by my school principal while I was bunking the class.This interesting question is from Entity Relationship Diagrams topic in portion Database Design and the ER Model of RDBMS

Answer»

The CORRECT choice is (a) One-one

Explanation: A directed LINE ( →)from a relationship SET to two ENTITY SETS means that there is a one-one cardinality between two entity sets.



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