& its Importance.
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Collaboration diagram. (business analyst) / Communication diagram.
Collaboration diagram: Displays object interactions organized around objects and their links to each other.
First thing you need to know is there is no much difference between collaboration diagram and communication diagram more or less thy are same. Communication diagram is little simplified diagram of the collaboration diagram.
A collaboration diagram is nothing but the relation between objects in a system. It is very easy to draw the collaboration diagram. Between each objects there is line that will be drawn with an arrow mark at the end of the line and a number is also indicated at the end of the line.
There are mainly 3 main elements in an collaboration object. 1) Object, 2) Relation 3) Message.
a) Object is the one that exist in the application.
b) Relation is the actual relation between two objects and the numbers 1, 2, 3 etc shows the sequence of the interactions.
c) Message is the functionality that is happening between object1 & object 2.
The main objective of this collaboration diagram is it gives the messages that will come between two objects for a particular use case or scenario. It is mainly used when there is a big scenario. This diagram is just a different view of a scenario. Sometimes sequence & collaboration diagrams are called as interaction diagrams.