Ace the 2026 OCSMP Level 1 Behavioral Test – Unlock Your Systems Magic!

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What is the notation of a create message?

Dashed line with an open arrowhead. The tail end is connected to sending lifeline and the arrowhead end of the message is connected to the head of a lifeline that is getting created

In a sequence diagram, a create message is used when an operation results in a new object coming into existence. It is drawn as a dashed line ending in a hollow (open) arrowhead that points to the lifeline of the object being created, and that lifeline begins at that point. This distinguishes creation from ordinary calls, which are shown with a solid line and a filled arrowhead. The other dashed-line option with a filled arrowhead and the solid-line options do not represent creation, since they indicate different kinds of messages or interactions.

Solid line with a filled arrowhead

Dashed line with a closed arrowhead

Solid line with an open arrowhead

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