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An n-array relationship is drawn using which symbol:(a) A diamond(b) A line with arrows showing direction(c) A line without arrows showing direction(d) A rectangleI had been asked this question in a national level competition.I need to ask this question from Attribute, Tuple and Entity topic in division Planning Oracle Applications of Oracle

Answer»

The correct option is (a) A diamond

Explanation: When a single PARENT-child RELATIONSHIP exists, the relationship is called binary. All of the previous examples of relationships to this point have been binary relationships. However, when creating a DATA model, it is not uncommon to come across n-array relationships, the MODELING name for relationships between two or more parent entities and a single child table.



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