COMPUTER SCIENCE ILLUMIN.-TEXT
COMPUTER SCIENCE ILLUMIN.-TEXT
7th Edition
ISBN: 9781284156010
Author: Dale
Publisher: Jones & Barlett
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Chapter 9, Problem 65E
Program Plan Intro

Boolean operator:

  • The Boolean operator is a special operator and subset of the Boolean algebra that produces the “true” or “false” statement.
  • The “AND”, “OR”, and “NOT” are the Boolean operators.

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TASK 2: Airline flight information Using domain and tuple relational calculus, find: 1. Find the eids of pilots certified for some Boeing aircraft. 2. Find the names of pilots certified for some Boeing aircraft. 3. Find the aids of all aircraft that can be used on non-stop flights from Paris to Vancouver. 4. Find the names of pilots who can operate planes with a range greater than 3,000 miles but are not certified on any Boeing aircraft. 5. Find the eids of employees who make the highest salary (multiple employees can have highest salary). Relation Flights Aircraft Certified Relational schema FLIGHTS(flno, from, to, distance, departs, arrives) AIRCRAFT (aid, aname, cruisingrange) CERTIFIED (#eid, #aid) Employees EMPLOYEES(eid, ename, salary)
Data environment IBL The company Internet Big Library (abbr. IBL) was established in the year 2000. The most important tables of the IBL information system are as follows. Books (bid, author, title, publisher, year, notes); Members (mid, name, surname, street, city, country, birthday, phone, notes); Borrow (rid, bid, mid, date, notes);
TASK 3: Airline transportation AIRPORT (IDLE, name, city, country) Relation Relational schema I airport a airplane p lands AIRPLANE (IdTL, type, description, manufacturer) LANDS (#IDLE, #IdTL, dateFrom) Relation LANDS includes information about where each type of an airplane can land, on what airports and since when. Using domain and tuple relational calculus, find: 1. Find all names of the airports, where type B747 airplanes can land. 2. Find all IDLE of airports, on which type B747 or B748 airplanes can land 3. Find all IdLE of airports, which are located in Austria or that type B747 airplane can land on them. 4. Find all IDLE of airports, on which all types of planes can land.

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COMPUTER SCIENCE ILLUMIN.-TEXT

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