<p><img alt="Domain Consider a cinema database that stores ticket sales. Each Screening of a movie is stored in a relation with an id, the name of the movie, the time
<br/><img src="https://media.cheggcdn.com/media%2Fac5%2Fac54115a-9e8b-445f-9635-bc77271082e6%2Fimage.png" alt="Moving to anĨther question will save this response. stion 3 When the velocity of fluid in a passage reaches the speed of sound at any oross section, the