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could you please help me figure the question out and give explaniation for each answer? Thanks! 2. Queries. Consider the following schema for a relational
could you please help me figure the question out and give explaniation for each answer? Thanks!
2. Queries. Consider the following schema for a relational database. The schema models which Uber drivers drive which passengers to which destination at what time DRIVER-[did, dname, rating, car.type with key {did) - PASSENGER-[pno, pname, email) with key {pno) TRIP did, pno, time, dest with key [did, time] and foreign keys [didCDRIVER[did [pno)CPASSENGER[pno] (a) Write down an English language description for the following domain relational 6 marks] calculus query (Frating) rdid-Zgname (DRIVER(zdid-Zgname, Zrating. Subaru) ? Vapno, atime (TRIP (rdid , Xpno, Xtime. Lah-Lah-Land) (b) Write down the following query in SQL: What is the email of passengers that where 6 marks] driven by Darth Vader to Timbaktu in a Tuk-tuk? (c) Write down the following query in relational algebra: What are the names of drivers 6 marks who have driven more than one passenger to the same destination? (d) Write down the following query in 7 marks 7 marks 7 marks What are the names of passengers who were driven to Spookers by everyone who - relational algebra, and - safe domain relational calculus, and SQL drives a car of t ype TrabantStep by Step Solution
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