Computers and Technology, 02.01.2021 01:20 cdraytonn
Consider the following relational database that stores information about bars and customers: Drinker (name, address) Bar (name, address) Beer (name, brewer) Frequents (drinker, bar, times a week) Likes (drinker, beer) Serves (bar, beer, price) Write the following queries in relational algebra: 1. Find all drinkers who frequent only those bars that serve some beers they like. 2. Find all drinkers who frequent every bar that serves some beers they like.3. Find those drinkers who enjoy exactly the same set of beers as Amy.
Answers: 2
Computers and Technology, 22.06.2019 09:30, caldonjoshhsms2061
What are the steps involved in accepting all the changes in a document? arrange these in order click edit. click accept or reject. click changes. click accept all.
Answers: 1
Computers and Technology, 22.06.2019 10:30, icantspeakengles
Aconstruction company is creating a powerpoint presentation describing how they calculate costs during each construction step. they plan to email this presentation to clients. the individual clients will be watching the presentation slide show on their own personal computers. what is the most important formatting step the company should take to make the text readable and pleasing to the eye?
Answers: 2
Computers and Technology, 22.06.2019 18:00, Geo777
Suppose an astronomer discovers a large, spherical-shaped body orbiting the sun. the body is composed mostly of rock, and there are no other bodies sharing its orbit. what is the best way to categorize this body? a. planet b. moon c. comet d. asteroid
Answers: 1
Consider the following relational database that stores information about bars and customers: Drinker...
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