Introduction to Programming with C++, 3rd edition
3rd Edition
ISBN: 9780133377477
Author: Y. Daniel Liang
Publisher: Pearson Academic Computing
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Chapter 2, Problem 29CP
Show the printout of the following code:
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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 2 Solutions
Introduction to Programming with C++, 3rd edition
Ch. 2 - Show the output of the following code:
Ch. 2 - How do you write the statements to let the user...Ch. 2 - Prob. 3CPCh. 2 - Which of the following identifiers are valid?...Ch. 2 - Identify and fix the errors in the following...Ch. 2 - Prob. 6CPCh. 2 - Prob. 7CPCh. 2 - Translate the following algorithm into code:
Step...Ch. 2 - Prob. 9CPCh. 2 - Prob. 10CP
Ch. 2 - Prob. 11CPCh. 2 - Prob. 12CPCh. 2 - Prob. 13CPCh. 2 - Prob. 14CPCh. 2 - Prob. 15CPCh. 2 - Are the following statements correct? If so, show...Ch. 2 - Write a statement to display the result of 23.5.Ch. 2 - Suppose m and r are integers. Write a C++...Ch. 2 - How would you write the following arithmetic...Ch. 2 - Prob. 20CPCh. 2 - Prob. 21CPCh. 2 - Which of the following statements are true?
a....Ch. 2 - Show the printout of the following code:
Ch. 2 - Prob. 24CPCh. 2 - Prob. 25CPCh. 2 - Prob. 26CPCh. 2 - Show the following output;
Ch. 2 - If you change in line 12 in Listing 2.10, what...Ch. 2 - Show the printout of the following code:
Ch. 2 - How would you write the following arithmetic...Ch. 2 - (Convert Celsius to Fahrenheit) Write a program...Ch. 2 - (Compute the volume of a cylinder) Write a program...Ch. 2 - (Convert feet into meters) Write a program that...Ch. 2 - (Convert pounds into kilograms) Write a program...Ch. 2 - (Financial application: calculate tips) Write a...Ch. 2 - (Sum the digits in an integer) Write a program...Ch. 2 - (Find the number of years) Write a program that...Ch. 2 - (Current time) Listing 2.9, ShowCurrentTime.cpp,...Ch. 2 - (Physics: acceleration) Average acceleration is...Ch. 2 - (Science: calculating energy) Write a program that...Ch. 2 - (Population projection) Rewrite Programming...Ch. 2 - (Physics: finding runway length) Given an...Ch. 2 - (Financial application: compound value) Suppose...Ch. 2 - (Health application: BMP) Body Mass Index (BMI) is...Ch. 2 - (Geometry: distance of two points) Write a program...Ch. 2 - (Geometry: area of a hexagon) Write a program that...Ch. 2 - (Science: wind-chill temperature) How cold is it...Ch. 2 - (Print a table) Write a program that displays the...Ch. 2 - (Geometry: area of a triangle) Write a program...Ch. 2 - (Slope of a line) Write a program that prompts the...Ch. 2 - (Cost of driving) Write a program that prompts the...Ch. 2 - (Financial application: calculate interest) If you...Ch. 2 - (Financial application: future investment value)...Ch. 2 - Prob. 24PE
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