Which UML symbol represents aggregation? a filled triangle an unfilled diamond an unfilled triangle a filled diamond

Oracle 12c: SQL
3rd Edition
ISBN:9781305251038
Author:Joan Casteel
Publisher:Joan Casteel
Chapter1: Overview Of Database Concepts
Section: Chapter Questions
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Which UML symbol represents aggregation?

a filled triangle
an unfilled diamond
an unfilled triangle
a filled diamond
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Step 1

UML stands for Unified Modelling Language.

  • It is popular for its diagrammatic notation.
  • It is used for visualizing, constructing, documentation etc. purpose.
  • Efficient and appropriate use of notations is important for the modeling.

 

Aggregation:

  • It is a kind of binary association between a property and one or more of its composite objects.
  • It shows asymmetric property. i.e., aggregation can only be done with one end.
  • It is transitive in nature.
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