Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
5th Edition
ISBN: 9780134801155
Author: Tony Gaddis
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 9PE
Shipping Charges
The Fast Freight Shipping Company charges the following rates:
| Weight of Package | Rate per Pound |
| 2 pounds or less | $1.10 |
| Over 2 pounds but not more than 6 pounds | $2.20 |
| Over 6 pounds but not more than 10 pounds | $3.70 |
| Over 10 pounds | $3.80 |
Design a
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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'.
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Chapter 4 Solutions
Starting Out with Programming Logic and Design (5th Edition) (What's New in Computer Science)
Ch. 4.1 - What is a control structure?Ch. 4.1 - What is a decision structure?Ch. 4.1 - Prob. 4.3CPCh. 4.1 - Prob. 4.4CPCh. 4.1 - What types of relationships between values can you...Ch. 4.1 - Write a pseudocode If-Then statement that assigns...Ch. 4.1 - Write a pseudocode If-Then statement that assigns...Ch. 4.2 - Prob. 4.8CPCh. 4.2 - What statement do you use in pseudocode to write a...Ch. 4.2 - When you write an If-Then-Else statement, under...
Ch. 4.3 - If the following pseudocode were an actual...Ch. 4.3 - If the following pseudocode were an actual...Ch. 4.4 - Prob. 4.13CPCh. 4.4 - What statement do you use in pseudocode to write a...Ch. 4.4 - When you write an If-Then-Else statement, under...Ch. 4.4 - Convert the following pseudocode to an...Ch. 4.5 - Prob. 4.17CPCh. 4.5 - How do you write a multiple alternative decision...Ch. 4.5 - What does the case structure test, in order to...Ch. 4.5 - You need to write a multiple alternative decision...Ch. 4.6 - Prob. 4.21CPCh. 4.6 - Prob. 4.22CPCh. 4.6 - Assume the variables a = 2, b = 4, and c = 6....Ch. 4.6 - Explain how short-circuit evaluation works with...Ch. 4.6 - Prob. 4.25CPCh. 4.6 - Write an If-Then statement that displays the...Ch. 4.7 - Prob. 4.27CPCh. 4.7 - What is a flag variable?Ch. 4 - A __ structure can execute a set of statements...Ch. 4 - A __ structure provides one alternative path of...Ch. 4 - In pseudocode, the If-Then statement is an example...Ch. 4 - A(n) __ expression has a value of either true or...Ch. 4 - The symbols,, and== are all __ operators. a....Ch. 4 - A(n) __ structure tests a condition and then takes...Ch. 4 - You use a(n) __ statement in pseudocode to write a...Ch. 4 - You use a(n) _________ statement in pseudocode to...Ch. 4 - A ______ structure allows you to test the value of...Ch. 4 - Prob. 10MCCh. 4 - AND, OR, and NOT are _____ operators. a....Ch. 4 - A compound Boolean expression created with the...Ch. 4 - A compound Boolean expression created with the...Ch. 4 - The ____ operator takes a Boolean expression as...Ch. 4 - A ________ is a Boolean variable that signals when...Ch. 4 - Prob. 1TFCh. 4 - A program can be made of only one type of control...Ch. 4 - A single alternative decision structure tests a...Ch. 4 - A decision structure can be nested inside another...Ch. 4 - A compound Boolean expression created with the AND...Ch. 4 - Explain what is meant by the term conditionally...Ch. 4 - You need to test a condition and then execute one...Ch. 4 - If you need to test the value of a variable and...Ch. 4 - Briefly describe how the AND operator works.Ch. 4 - Briefly describe how the OR operator works.Ch. 4 - Prob. 6SACh. 4 - What is a flag and how does it work?Ch. 4 - Design an If-Then statement (or a flowchart with a...Ch. 4 - Design an If- Then statement (or a flowchart with...Ch. 4 - Design an If- Then-Else statement (or a flowchart...Ch. 4 - The following pseudocode contains several nested...Ch. 4 - Design nested decision structures that perform the...Ch. 4 - Rewrite the following If-Then-Else If statement as...Ch. 4 - Design an If-Then-Else statement (or a flowchart...Ch. 4 - Design an If-Then-Else statement (or a flowchart...Ch. 4 - Design a case structure that tests the month...Ch. 4 - Write an If-Then statement that sets the variable...Ch. 4 - Part of the following pseudocode is incompatible...Ch. 4 - Prob. 2DECh. 4 - Prob. 3DECh. 4 - Roman Numerals Design a program that prompts the...Ch. 4 - Areas of Rectangles The area of a rectangle is the...Ch. 4 - Mass and Weight Scientists measure an objects mass...Ch. 4 - Magic Dates The date June 10, 1960, is special...Ch. 4 - Color Mixer The colors red, blue, and yellow are...Ch. 4 - Book Club Points Serendipity Booksellers has a...Ch. 4 - Software Sales A software company sells a package...Ch. 4 - Change for a Dollar Game Design a change-counting...Ch. 4 - Shipping Charges The Fast Freight Shipping Company...Ch. 4 - Body Mass Index Program Enhancement In Programming...Ch. 4 - Time Calculator Design a program that asks the...Ch. 4 - Leap Year Detector Design a program that asks the...
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