EBK STARTING OUT WITH PROGRAMMING LOGIC
4th Edition
ISBN: 9780100659384
Author: GADDIS
Publisher: YUZU
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Textbook Question
Chapter 10, Problem 3MC
Before a file can be used by a
- a. formatted
- b. encrypted
- c. closed
- d. opened
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Students have asked these similar questions
Q4: Consider the following MAILORDER relational schema describing the data for a mail order
company. (Choose five only).
PARTS(Pno, Pname, Qoh, Price, Olevel)
CUSTOMERS(Cno, Cname, Street, Zip, Phone)
EMPLOYEES(Eno, Ename, Zip, Hdate)
ZIP CODES(Zip, City)
ORDERS(Ono, Cno, Eno, Received, Shipped)
ODETAILS(Ono, Pno, Qty)
(10 Marks)
I want a detailed explanation to
understand the mechanism how it is
Qoh stands for quantity on hand: the other attribute names are self-explanatory. Specify and
execute the following queries using the RA interpreter on the MAILORDER database schema.
a. Retrieve the names of parts that cost less than $20.00.
b. Retrieve the names and cities of employees who have taken orders for parts costing more than
$50.00.
c. Retrieve the pairs of customer number values of customers who live in the same ZIP Code.
d. Retrieve the names of customers who have ordered parts from employees living in Wichita.
e. Retrieve the names of customers who have ordered parts costing less…
Q4: Consider the following MAILORDER relational schema describing the data for a mail order
company. (Choose five only).
(10 Marks)
PARTS(Pno, Pname, Qoh, Price, Olevel)
CUSTOMERS(Cno, Cname, Street, Zip, Phone)
EMPLOYEES(Eno, Ename, Zip, Hdate)
ZIP CODES(Zip, City)
ORDERS(Ono, Cno, Eno, Received, Shipped)
ODETAILS(Ono, Pno, Qty)
Qoh stands for quantity on hand: the other attribute names are self-explanatory. Specify and
execute the following queries using the RA interpreter on the MAILORDER database schema.
a. Retrieve the names of parts that cost less than $20.00.
b. Retrieve the names and cities of employees who have taken orders for parts costing more than
$50.00.
c. Retrieve the pairs of customer number values of customers who live in the same ZIP Code.
d. Retrieve the names of customers who have ordered parts from employees living in Wichita.
e. Retrieve the names of customers who have ordered parts costing less than$20.00.
f. Retrieve the names of customers who have not placed…
ut
da
Q4: Consider the LIBRARY relational database schema shown in Figure below
a. Edit Author_name to new variable name where previous
surname was 'Al - Wazny'.
Update book_Authors
set Author_name = 'alsaadi'
where Author_name = 'Al - Wazny'
b. Change data type of Phone to string instead
of numbers.
عرفنه شنو الحل
BOOK
Book id Title Publisher_name
BOOK AUTHORS
Book id Author_name
PUBLISHER
Name Address Phone
e u
al b
are
rage
c. Add two Publishers Company existed in UK.
insert into publisher(name, address, phone)
value('ali','uk',78547889), ('karrar', 'uk', 78547889)
d. Remove all books author when author name contains second character 'D' and ending by
character 'i'.
es inf
rmar
nce 1
tic
عرفته شنو الحل
e. Add one book as variables data?
عرفته شنو الحل
Chapter 10 Solutions
EBK STARTING OUT WITH PROGRAMMING LOGIC
Ch. 10.1 - Where are files normally stored?Ch. 10.1 - What is an output file?Ch. 10.1 - What is an input file?Ch. 10.1 - What three steps must be taken by a program when...Ch. 10.1 - Prob. 10.5CPCh. 10.1 - Prob. 10.6CPCh. 10.1 - When writing a program that performs an operation...Ch. 10.1 - In most programming languages, if a file already...Ch. 10.1 - What is the purpose of opening a file?Ch. 10.1 - What is the purpose of closing a file?
Ch. 10.1 - Prob. 10.11CPCh. 10.1 - Prob. 10.12CPCh. 10.1 - What is a files read position? Initially, where is...Ch. 10.1 - In what mode do you open a file if you want to...Ch. 10.2 - Prob. 10.15CPCh. 10.2 - What is the purpose of the eof function?Ch. 10.2 - Is it acceptable for a program to attempt to read...Ch. 10.2 - Prob. 10.18CPCh. 10.2 - Which of the following loops would you use to read...Ch. 10.4 - Prob. 10.20CPCh. 10.4 - Prob. 10.21CPCh. 10.4 - Prob. 10.22CPCh. 10 - A file that data is written to is known as a(n) a....Ch. 10 - A file that data is read from is known as a(n) a....Ch. 10 - Before a file can be used by a program, it must be...Ch. 10 - When a program is finished using a file, it should...Ch. 10 - The contents of this type of file can be viewed in...Ch. 10 - This type of file contains data that has not been...Ch. 10 - When working with this type of file, you access...Ch. 10 - When working with this type of file, you can jump...Ch. 10 - This is a small holding section in memory that...Ch. 10 - Prob. 10MCCh. 10 - This is a character or set of characters that...Ch. 10 - This marks the location of the next item that will...Ch. 10 - When a file is opened in this mode, data will be...Ch. 10 - The expression NOT eof (myFi1e) is equivalent to...Ch. 10 - This is a single piece of data within a record. a....Ch. 10 - When working with a sequential access file, you...Ch. 10 - In most languages, when you open an output file...Ch. 10 - The process of opening a file is only necessary...Ch. 10 - Prob. 4TFCh. 10 - Prob. 5TFCh. 10 - When a file that already exists is opened in...Ch. 10 - In control break logic, the program performs some...Ch. 10 - Describe the three steps that must be taken when a...Ch. 10 - Why should a program close a file when its...Ch. 10 - What is a files read position? Where is the read...Ch. 10 - If an existing file is opened in append mode, what...Ch. 10 - In most languages, if a file does not exist and a...Ch. 10 - What is the purpose of the eof function that was...Ch. 10 - What is control break logic?Ch. 10 - Design a program that opens an output file with...Ch. 10 - Design a program that opens the my_name.dat file...Ch. 10 - Prob. 3AWCh. 10 - Design an algorithm that does the following: opens...Ch. 10 - Modify the algorithm that you designed in question...Ch. 10 - Write pseudocode that opens an output file with...Ch. 10 - Prob. 7AWCh. 10 - A file exists on the disk named students.dat. The...Ch. 10 - Why doesn't the following pseudocode module work...Ch. 10 - File Display Assume that a file containing a...Ch. 10 - Item Counter Assume that a file containing a...Ch. 10 - Sum of Numbers Assume that a file containing a...Ch. 10 - Average of Numbers Assume that a file containing a...Ch. 10 - Largest Number Assume that a file containing a...Ch. 10 - Golf Scores The Springfork Amateur Golf Club has a...Ch. 10 - Sales Report Brewster's Used Cars, Inc. employs...
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