Which option is typically only used when utilizing self joins? O display name
O alias
O relationship
O primary key

Why were most movies from the late 1890s until the early 1930s only filmed in black and white? there were only a few people who could afford the technology to produce color motion pictures back then. audiences did not want color motion pictures until later. the film used to make color motion pictures often overheated, which was a safety hazard, so it was generally not allowed. color films had to be hand-colored, frame by frame.

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What are the benefits to using presentations to organize and deliver information in the workplace? they add visual appeal. they are easy to update. they ensure accuracy. they can be created quickly. the work can't be lost.