Concurrency in Sequence Diagrams
{"Image DocumentName": "Concurrency in Sequence Diagrams", "Image ImageDescription": "Concurrent processes: UML 1: asynchronous messages as horizontal lines with half arrow heads. UML 2 makes this distinction by not filling an arrowhead. Fowler prefers older notation. Why? Which do you prefer? After setting up Transaction Coordinator, invoke concurrent Transaction Checkers. If a check fails, kill all Transaction Checker processes. Note use of comments in margin. When is this a good idea?", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}