STARTING OUT WITH C++ MPL
9th Edition
ISBN: 9780136673989
Author: GADDIS
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 3RQE
Internally, the CPU consists of the _____ and the _____.
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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 1 Solutions
STARTING OUT WITH C++ MPL
Ch. 1.2 - Why is the computer used by so many different...Ch. 1.2 - List the five major hardware components of a...Ch. 1.2 - Internally, the CPU consists of what two units?Ch. 1.2 - Prob. 1.4CPCh. 1.2 - Prob. 1.5CPCh. 1.2 - Prob. 1.6CPCh. 1.2 - What are the two general categories of software?Ch. 1.2 - Prob. 1.8CPCh. 1.2 - What do you call a program that performs a...Ch. 1.2 - Word processing programs, spreadsheet programs,...
Ch. 1.3 - What is an algorithm?Ch. 1.3 - Why were computer programming languages invented?Ch. 1.3 - Prob. 1.13CPCh. 1.3 - Prob. 1.14CPCh. 1.3 - Prob. 1.15CPCh. 1.3 - Prob. 1.16CPCh. 1.3 - Prob. 1.17CPCh. 1.5 - Describe the difference between a key word and a...Ch. 1.5 - Prob. 1.19CPCh. 1.5 - Prob. 1.20CPCh. 1.5 - Prob. 1.21CPCh. 1.5 - Prob. 1.22CPCh. 1.5 - What must take place in a program before a...Ch. 1.5 - Prob. 1.24CPCh. 1.6 - What four items should you identify when defining...Ch. 1.6 - Prob. 1.26CPCh. 1.6 - Prob. 1.27CPCh. 1.6 - What is pseudocode?Ch. 1.6 - What is the difference between high-level...Ch. 1.6 - Describe what a compiler does with a programs...Ch. 1.6 - Prob. 1.31CPCh. 1.6 - Prob. 1.32CPCh. 1.6 - Prob. 1.33CPCh. 1 - Computers can do many different jobs because they...Ch. 1 - The job of the _____ is to fetch instructions,...Ch. 1 - Internally, the CPU consists of the _____ and the...Ch. 1 - Prob. 4RQECh. 1 - The two general categories of software are _____...Ch. 1 - Prob. 6RQECh. 1 - Since computers cant be programmed in natural...Ch. 1 - _____is the only language computers really...Ch. 1 - Prob. 9RQECh. 1 - Prob. 10RQECh. 1 - A programs ability to run on several different...Ch. 1 - Words that have special meaning in a programming...Ch. 1 - Prob. 13RQECh. 1 - _____ are characters or symbols that perform...Ch. 1 - _____ characters or symbols mark the beginning or...Ch. 1 - Prob. 16RQECh. 1 - A(n) _____ is a named storage location.Ch. 1 - A variable must be _____ before it can be used in...Ch. 1 - The three primary activities of a program are...Ch. 1 - _____ is information a program gathers from the...Ch. 1 - _____ is information a program sends to the...Ch. 1 - A(n) _____ is a diagram that graphically...Ch. 1 - Prob. 23RQECh. 1 - What is the difference between system software and...Ch. 1 - Prob. 25RQECh. 1 - Prob. 26RQECh. 1 - Account Balance Write high-level and detailed...Ch. 1 - Sales Tax Write high-level and detailed pseudocode...Ch. 1 - The variable sum starts with the value 0. Add 10...Ch. 1 - The variable x starts with the value 0. The...Ch. 1 - The variable j starts with the value 10. The...Ch. 1 - The variable a starts with the value 1. The...Ch. 1 - Find the Error 33. The following pseudocode...Ch. 1 - Suppose one of your friends, who paints the...Ch. 1 - Candy Bar Sales Using Program 1-1 as an example,...Ch. 1 - Baseball Costs Using Program 1-1 as an example,...Ch. 1 - Flower Garden Write a program that calculates how...
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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.arrow_forwardConsider 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.arrow_forwardThe 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…arrow_forward
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