Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Chapter 5, Problem 8RE
Explanation of Solution
a.
Given:
Consider the two pixels on a computer screen with the pixel coordinates (x1, y1) and (x2, y2).
Condition to check the two pixels are same:
if (x1==x2 && y1==y2){ }
Explanation:...
Explanation of Solution
b.
Consider the two pixels on a computer screen with the pixel coordinates (x1, y1) and (x2, y2).
Condition to check the two pixels are closer to the distance of “5”:
if (Math.sqrt (Math.pow(x1-X2,2)+ Math.pow(y2-y1,2)) < 5)
{ }
Explanation:
- The above given “if” condition is ...
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Consider the following database for some store:
Customers (cid, cname, city, discount)Agents (aid, aname, city, percent)Products (pid, pname, city, quantity, price)Orders (ordno, mon, cid, aid, pid, qty, dollars)
The relation Customers records the ID (cid), name (cname), location (city) of each customer and a discount percentage (discount) for this customer.
The relation Agents records the ID (aid), name (aname), location (city) of each agent and a transaction fee (percent) charged by this agent.
The relation Products lists the ID (pid), name (pname), location (city), quantity and price of available products.
And finally, the relation Orders contains a unique order number (ordno), the month (mon), customer (cid), agent (aid), product (pid), quantity (qty) of each order as well as the total value (dollars) of the transaction.
1. Express the following query in SQL
(a) List customers (names) who do not have discounts but purchased at least one product of price greater than $50.
(b) Find…
Consider the following relational schema and briefly answer the questions that follow:
Emp(eid: integer, ename: string, age: integer, salary: real)
Works(eid: integer, did: integer, pct_time: integer)
Dept(did: integer, budget: real, managerid: integer)
a. Define a table constraint on Dept that will ensure that all managers have age > 30.
b. Write SQL statements to delete all information about employees whose salaries exceed that of the manager of one or more departments that they work in. Be sure to ensure that all the relevant integrity constraints are satisfied after your updates.
Consider the following relations:
Student(snum: integer, sname: string, rmajor: string,
level: string, age: integer)
Class(cname: string, meets_at: time, room: string, fid: integer)
Enrolled(snum: integer, cname: string)
Faculty(fid: integer, fname: string, deptid: integer)
The meaning of these relations is straightforward; for example, Enrolled has one record per student-class pair such that the student is enrolled in the class.
2. Express each of the following integrity constraints in SQL unless it is implied by the primary and foreign key constraint; if so, explain how it is implied. If the constraint cannot be expressed in SQL, say so. For each constraint, state what operations (inserts, deletes, and updates on specific relations) must be monitored to enforce the constraint.
(a) Every faculty member must teach at least two courses.
(b) Every student must be enrolled in the course called 'Math101'.
(c) A student cannot add more than two courses at a time…
Chapter 5 Solutions
Big Java, Binder Ready Version: Early Objects
Ch. 5.1 - In some Asian countries, the number 14 is...Ch. 5.1 - Consider the following if statement to compute a...Ch. 5.1 - Prob. 3SCCh. 5.1 - Prob. 4SCCh. 5.1 - The variables fuelAmount and fuelCapacity hold the...Ch. 5.2 - Prob. 6SCCh. 5.2 - Prob. 7SCCh. 5.2 - Prob. 8SCCh. 5.2 - Prob. 9SCCh. 5.2 - Prob. 10SC
Ch. 5.2 - Prob. 11SCCh. 5.3 - Prob. 13SCCh. 5.3 - Prob. 14SCCh. 5.3 - Prob. 15SCCh. 5.3 - Prob. 16SCCh. 5.3 - Suppose the user enters -1 into the earthquake...Ch. 5.3 - Suppose we want to have the earthquake program...Ch. 5.4 - Prob. 19SCCh. 5.4 - Prob. 20SCCh. 5.4 - Prob. 21SCCh. 5.4 - Prob. 22SCCh. 5.4 - Prob. 23SCCh. 5.5 - Prob. 24SCCh. 5.5 - Prob. 25SCCh. 5.5 - Prob. 26SCCh. 5.5 - Prob. 27SCCh. 5.5 - Prob. 28SCCh. 5.6 - Prob. 29SCCh. 5.6 - Prob. 30SCCh. 5.6 - Prob. 31SCCh. 5.6 - Prob. 32SCCh. 5.7 - Prob. 33SCCh. 5.7 - Prob. 34SCCh. 5.7 - Prob. 35SCCh. 5.7 - Prob. 36SCCh. 5.7 - Prob. 37SCCh. 5.8 - In the ElevatorSimulation2 program, what is the...Ch. 5.8 - Prob. 39SCCh. 5.8 - Prob. 40SCCh. 5.8 - Prob. 41SCCh. 5 - Prob. 1RECh. 5 - Explain the difference between
s - o;
if (x > o) {...Ch. 5 - Prob. 3RECh. 5 - What do these code fragments print?
int n - 1;
int...Ch. 5 - Suppose x and y are variables of type double....Ch. 5 - Suppose x and y are variables of type double....Ch. 5 - Explain why it is more difficult to compare...Ch. 5 - Given two pixels on a computer screen with integer...Ch. 5 - It is easy to confuse the - and – operators. Write...Ch. 5 - Prob. 11RECh. 5 - In a scheduling program, we want to check whether...Ch. 5 - Prob. 13RECh. 5 - Prob. 14RECh. 5 - Prob. 15RECh. 5 - Prob. 16RECh. 5 - Prob. 17RECh. 5 - Prob. 18RECh. 5 - Prob. 19RECh. 5 - Prob. 20RECh. 5 - Prob. 21RECh. 5 - Prob. 22RECh. 5 - Prob. 23RECh. 5 - Prob. 24RECh. 5 - Prob. 25RECh. 5 - Prob. 26RECh. 5 - Prob. 27RECh. 5 - Prob. 28RECh. 5 - Prob. 29RECh. 5 - Prob. 30RECh. 5 - Prob. 31RECh. 5 - Prob. 32RECh. 5 - Prob. 33RECh. 5 - Prob. 1PECh. 5 - Prob. 2PECh. 5 - Prob. 3PECh. 5 - Prob. 4PECh. 5 - Prob. 5PECh. 5 - Prob. 6PECh. 5 - Prob. 7PECh. 5 - Write a program that reads four integers and...Ch. 5 - Prob. 9PECh. 5 - Prob. 10PECh. 5 - Prob. 11PECh. 5 - The boiling point of water drops by about one...Ch. 5 - Prob. 13PECh. 5 - Prob. 14PECh. 5 - Prob. 15PECh. 5 - Prob. 16PECh. 5 - Prob. 17PECh. 5 - The original U.S. income tax of 1913 was quite...Ch. 5 - Prob. 19PECh. 5 - Prob. 20PECh. 5 - Prob. 21PECh. 5 - Prob. 22PECh. 5 - Prob. 23PECh. 5 - Prob. 24PECh. 5 - Prob. 25PECh. 5 - Prob. 1PPCh. 5 - Write a program that computes taxes for the...Ch. 5 - Prob. 3PPCh. 5 - Unit conversion. Write a unit conversion program...Ch. 5 - Write a program that reads in the x and...Ch. 5 - Prob. 6PPCh. 5 - Write a program that reads in the x-and...Ch. 5 - A year with 366 days is called a leap year. Leap...Ch. 5 - Roman numbers. Write a program that converts a...Ch. 5 - Prob. 10PPCh. 5 - Prob. 11PPCh. 5 - When you use an automated teller machine (ATM)...Ch. 5 - Prob. 13PPCh. 5 - Prob. 14PPCh. 5 - Prob. 15PPCh. 5 - Prob. 16PPCh. 5 - A minivan has two sliding doors. Each door can be...Ch. 5 - Prob. 18PPCh. 5 - Prob. 19PPCh. 5 - Prob. 20PPCh. 5 - Prob. 21PPCh. 5 - Prob. 22PPCh. 5 - Prob. 23PP
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