Select the correct statements about sequence diagrams. A. Replicated messages are shown using a "loop box." B. Sequence diagrams cannot show optional messages involved in an interactions. C. A cross on the life line on an object indicates that the object is deleted. D. Objects and actors involved in the interaction are shown in the vertical axis. E. Time moves forward down the vertical axis.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Select the correct statements about sequence diagrams.
A. Replicated messages are shown using a "loop box."
B. Sequence diagrams cannot show optional messages involved in an interactions.
C. A cross on the life line on an object indicates that the object is deleted.
D. Objects and actors involved in the interaction are shown in the vertical axis.
E. Time moves forward down the vertical axis.
Transcribed Image Text:Select the correct statements about sequence diagrams. A. Replicated messages are shown using a "loop box." B. Sequence diagrams cannot show optional messages involved in an interactions. C. A cross on the life line on an object indicates that the object is deleted. D. Objects and actors involved in the interaction are shown in the vertical axis. E. Time moves forward down the vertical axis.
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