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ISRO2014-11

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An aggregation association is drawn using which symbol?

  1. A line which loops back on to the same table
  2. A small open diamond at the end of a line connecting two tables
  3. A small closed diamond at the end of a line connecting two tables
  4. A small closed triangle at the end of a line connecting two tables
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ans is (b)

Aggregation

Aggregation is a special case of association. A directional association between objects. When an object ‘has-a’ another object, then you have got an aggregation between them. Direction between them specified which object contains the other object. Aggregation is also called a “Has-a” relationship.

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