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Realization
A realize signifies that a relationship exists between a set of elements that form a specification (the client) and another set of elements that form the implementation (the supplier).
Explanation
The realize dependency is an important relationship in that it signifies that one or more elements provide the implementation of a specification. When the supplier declares that it should receive signals or declares operations, the client element(s) must provide an implementation of these specifications. Some confusion arises between this stereotyped abstraction dependency and what is called a realize relationship. The difference is ambiguously defined or not significant, the realize relationship is however represented by a dotted line with an open triangular arrow head.