How is an object flow notated?

How is an object flow notated?

• A. Solid line with an open arrowhead
• B. Dashed line with a closed arrowhead
• C. Dotted line with no arrowhead
• D. Thick line with a filled arrowhead

Answer: (A)

Object flow indicates how data or objects move between actions in an activity diagram. In this notation, it is drawn as a solid line with an open (hollow) arrowhead, which signals the path of data travelling from one action to the next without signaling a control trigger. The solid line helps distinguish the movement of objects, while the hollow arrowhead shows the direction of that data transfer. Other line styles, like dashed or dotted lines or lines without arrowheads, don’t convey this data-sharing meaning in the same way, so they aren’t used for object flow in this context.

Object flow indicates how data or objects move between actions in an activity diagram. In this notation, it is drawn as a solid line with an open (hollow) arrowhead, which signals the path of data travelling from one action to the next without signaling a control trigger. The solid line helps distinguish the movement of objects, while the hollow arrowhead shows the direction of that data transfer. Other line styles, like dashed or dotted lines or lines without arrowheads, don’t convey this data-sharing meaning in the same way, so they aren’t used for object flow in this context.