LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.
5th Edition
ISBN: 9781337569798
Author: ECKERT
Publisher: CENGAGE L
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Expert Solution & Answer
Chapter 4, Problem 20RQ
Program Description Answer
The three standard permissions are executed, read, and write.
Hence, the correct answer is option “C”.
Expert Solution & Answer
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Students have asked these similar questions
TASK 1: Suppliers
Using domain and tuple relational calculus, find:
1. Find the sids of suppliers who supply some red or green part.
2. Find the sids of suppliers who supply some red part or are at „Koprska cesta 25".
3. Find the sids of suppliers who supply every part.
4. Find the sids of suppliers who supply every red part.
5. Find the sids of suppliers who supply every red or green part.
6. Find the pids of parts supplied by at least two different suppliers.
Relation
Relational schema
Suppliers
SUPPLIERS(sid, sname, address)
Parts
PARTS(pid, pname, color)
Catalog
CATALOG(#sid, #pid, cost)
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);
Chapter 4 Solutions
LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.
Ch. 4 - A symbolic link is also known as a soft link and...Ch. 4 - Prob. 2RQCh. 4 - There is no real difference between the “S” and...Ch. 4 - The default permissions given by the system prior...Ch. 4 - What must a user do to run cp or mv interactively...Ch. 4 - The root user utilizes the chgrp command to give...Ch. 4 - After typing the ls F command, you see the...Ch. 4 - After typing the command umask 731, the...Ch. 4 - Prob. 9RQCh. 4 - When you change the data in a file that is...
Ch. 4 - Prob. 11RQCh. 4 - Which of the following commands will change the...Ch. 4 - What does the /var directory contain? a. various...Ch. 4 - What does the mv command do? (Choose all that...Ch. 4 - A file has the following permissions: r--- -x-w-....Ch. 4 - The which command _________.
can only be used to...Ch. 4 - Hard links need to reside on the same filesystem...Ch. 4 - When applied to a directory, the SGID special...Ch. 4 - Which command do you use to rename files and...Ch. 4 - Prob. 20RQCh. 4 - Given the following output from the is command,...Ch. 4 - Only the root user can modify a file that has the...
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