Class P : It is defined as the problem that can be solved in a polynomial time and it is a subset of class N P . Class N P : It is defined as the set of all decision problems.

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Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

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Consider the following relational schema. An employee can work in more than one department; the pct_time field of the Works relation shows the percentage of time that a given employee works in a given department. Emp(eid: integer, ename: string, age: integer, salary: real) Works(eid: integer, did: integer, pct_time: integer) Dept(did: integer, budget: real, managerid: integer) Write the following queries in SQL: a. Print the name of each employee whose salary exceeds the budget of all of the departments that he or she works in. b. Find the enames of managers who manage only departments with budgets larger than $1 million, but at least one department with budget less than $5 million.

Consider the following schema: Suppliers(sid: integer, sname: string, address: string) Parts(pid: integer, pname: string, color: string) Catalog(sid: integer, pid: integer, cost: real) The Catalog relation lists the prices charged for parts by suppliers. Write the following queries in SQL: a. Find the sids of suppliers who charge more for some part than the average cost of that part (averaged over all the suppliers who supply that part). b. Find the sids of suppliers who supply a red part or a green part. c. For every supplier that supplies a green part and a red part, print the name and price of the most expensive part that she supplies.

The following relations keep track of airline flight information: Flights(flno: integer, from: string, to: string, distance: integer, departs: time, arrives: time, price: integer) Aircraft(aid: integer, aname: string, cruisingrange: integer) Certified(eid: integer, aid: integer) Employees(eid: integer, ename: string, salary: integer) Note that the Employees relation describes pilots and other kinds of employees as well; every pilot is certified for some aircraft, and only pilots are certified to fly. Write each of the following queries in SQL.(Additional queries using the same schema are listed in the exercises for Chapter 4) a. Identify the routes that can be piloted by every pilot who makes more than $100,000. b. Print the name and salary of every nonpilot whose salary is more than the average salary for pilots. c. Print the names of employees who are certified only on aircrafts with cruising range longer than 1000 miles and who are certified on some Boeing…

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Question

Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

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Answer 3

Question

Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

Expert Solution & Answer

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Answer 4

Question

Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 5

Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

Answer 6

Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

Answer 7

Chapter 12, Problem 39CRP

Program Plan Intro

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

Answer 8

Expert Solution & Answer

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Answer 11

Ch. 12.1 - Prob. 1QE Ch. 12.1 - Prob. 2QE Ch. 12.1 - Prob. 3QE Ch. 12.1 - Prob. 4QE Ch. 12.2 - Prob. 1QE Ch. 12.2 - Prob. 2QE Ch. 12.2 - Prob. 3QE Ch. 12.2 - Prob. 4QE Ch. 12.2 - Prob. 5QE Ch. 12.3 - Prob. 1QE

Class P : It is defined as the problem that can be solved in a polynomial time and it is a subset of class N P . Class N P : It is defined as the set of all decision problems.

Solution Summary: The author explains that Class P is defined as the problem that can be solved in a polynomial time, and it is subset of class NP.

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.

Want to see the full answer?

Chapter 12 Solutions

Class P : It is defined as the problem that can be solved in a polynomial time and it is a subset of class N P . Class N P : It is defined as the set of all decision problems.

Solution Summary: The author explains that Class P is defined as the problem that can be solved in a polynomial time, and it is subset of class NP.

ClassP: It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP. ClassNP: It is defined as the set of all decision problems.

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Chapter 12 Solutions

ClassP:

It is defined as the problem that can be solved in a polynomial time and it is a subset of class NP.

ClassNP:

It is defined as the set of all decision problems.