Software Development Engineer Interview Question:

Explain package diagram? What are collaboration diagram?

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Collaboration Diagrams:
An alternative presentation of a sequence diagram. We uses boxes to describe objects, the lines connecting two boxes indicate that the objects collaborate with to one another and we use a multiplicity factor "*" to indicate that all elements of the aggregation receive a message.
Package Diagram:
Complete set of sequence Diagrams or Collaboration Diagrams of the system.
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