MyProgrammingLab with Pearson eText -- Access Code Card -- for Building Java Programs
5th Edition
ISBN: 9780135472460
Author: REGES, Stuart, Stepp, Marty
Publisher: PEARSON
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Chapter 12, Problem 16E
Explanation of Solution
Method definition:
//method definition
public static int evenDigits(int n)
{
//condition to validate the number
if (n < 0)
{
//return the value
return -evenDigits(-n);
}
//validate the value of n
else if (n == 0)
{
//return 0
return 0;
}
//condition to validate the n value
else if (n % 2 == 0)
{
//return the value
&...
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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…
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.
Chapter 12 Solutions
MyProgrammingLab with Pearson eText -- Access Code Card -- for Building Java Programs
Ch. 12.1 -
What is recursion? How does a recursive method...Ch. 12.1 - Prob. 2SCPCh. 12.1 - Prob. 3SCPCh. 12.1 - Prob. 4SCPCh. 12.1 - Prob. 5SCPCh. 12.1 - Prob. 6SCPCh. 12.1 - Prob. 7SCPCh. 12.2 - Prob. 8SCPCh. 12.2 -
What would be the effect if the code for the...Ch. 12.2 -
What would be the effect if the code for the...
Ch. 12.3 - Prob. 11SCPCh. 12.3 - Prob. 12SCPCh. 12.3 - Prob. 13SCPCh. 12.3 - Prob. 14SCPCh. 12.3 - Prob. 15SCPCh. 12.3 - Prob. 16SCPCh. 12.3 - Prob. 17SCPCh. 12.3 - Prob. 18SCPCh. 12.3 - Prob. 19SCPCh. 12.4 - Prob. 20SCPCh. 12.4 - Prob. 21SCPCh. 12.5 - Why is recursion an effective way to implement a...Ch. 12.5 - Prob. 23SCPCh. 12.5 - Prob. 24SCPCh. 12.5 - Prob. 25SCPCh. 12.5 - Prob. 26SCPCh. 12.5 - Prob. 27SCPCh. 12.5 - Prob. 28SCPCh. 12 - Prob. 1ECh. 12 - Write a method called writeNums that takes an...Ch. 12 - Write a method called writeSequence that accepts...Ch. 12 - Write a recursive method called doubleDigits that...Ch. 12 - Prob. 5ECh. 12 - Prob. 6ECh. 12 - Prob. 7ECh. 12 - Write a recursive method called multiplyEvens that...Ch. 12 - Prob. 9ECh. 12 - Prob. 10ECh. 12 - Prob. 11ECh. 12 - Write a recursive method called isReverse that...Ch. 12 - Prob. 13ECh. 12 - Write a recursive method called dedup that takes a...Ch. 12 - Prob. 15ECh. 12 - Prob. 16ECh. 12 - Prob. 17ECh. 12 - Prob. 18ECh. 12 - Prob. 19ECh. 12 - Write a recursive method called waysToClimb that...Ch. 12 - Prob. 21ECh. 12 - Write a recursive method called subsets to find...Ch. 12 - Prob. 23ECh. 12 - Write a recursive method called printSquares to...
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