EBK STARTING OUT WITH VISUAL C#
5th Edition
ISBN: 9780135204818
Author: GADDIS
Publisher: VST
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Textbook Question
Chapter 12.1, Problem 12.2CP
Why do most businesses use a DBMS to store their data instead of creating their own text files to hold the data?
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Abstract classes & Interfaces (Ch13)
5. See the code below and solve the following.
class Circle {
protected double radius;
// Default constructor
public Circle() (
}
this(1.0);
// Construct circle with specified radius
public Circle(double radius) {
}
this.radius
radius;
// Getter method for radius
public double getRadius() {
}
return radius;
// Setter method for radius
public void setRadius(double radius) {
}
this.radius = radius;
// Implement the findArea method defined in GeometricObject
public double findArea() {
}
return radius* radius * Math. PI;
// Implement the find Perimeter method defined in GeometricObject
public double findPerimeter() {
}
return 2*radius*Math.PI;
// Override the equals() method defined in the Object class
public boolean equals(Circlel circle) {
}
return this.radius == circle.getRadius();
// Override the toString() method defined in the Object class
public String toString() {
}
}
return "[Circle] radius = " + radius;
5-1. Define a class name…
6. What is Race condition? How to prevent it? [2 marks]
7. How many synchronization methods do you know and compare the differences. [2 marks]
8. Explain what are the “mutual exclusion”, “deadlock”, “livelock”, and “eventual entry”, with
the traffic intersection as an example like dinning philosophy. [2 marks]
9. For memory allocation, what are the difference between internal fragmentation and external
fragmentation. Explain with an example. [2 marks]
10. How can the virtual memory map to the physical memory. Explain with an example. [2
marks]
Your answers normally have 50 words. Less than 50 words will not get marks.
1. What is context switch between multiple processes? [2 marks]
2. Draw the memory layout for a C program. [2 marks]
3. How many states does a process has? [2 marks]
4. Compare the non-preemptitve scheduling and preemptive scheduling. [2 marks]
5. Given 4 process and their arrival times and next CPU burst times, what are the average times
and average Turnaround time, for different scheduling algorithms including:
a. First Come, First-Served (FCFS) Scheduling [2 marks]
b. Shortest-Job-First (SJF) Scheduling [2 marks]
c. Shortest-remaining-time-first [2 marks]
d. Priority Scheduling [2 marks]
e. Round Robin (RR) [2 marks]
Process
Arrival Time
Burst Time
P1
0
8
P2
1
9
P3
3
2
P4
5
4
Chapter 12 Solutions
EBK STARTING OUT WITH VISUAL C#
Ch. 12.1 - Prob. 12.1CPCh. 12.1 - Why do most businesses use a DBMS to store their...Ch. 12.1 - When developing a C# application that uses a DBMS...Ch. 12.2 - Prob. 12.4CPCh. 12.2 - Prob. 12.5CPCh. 12.2 - What is the purpose of a primary key?Ch. 12.2 - Prob. 12.7CPCh. 12.2 - If a particular column is not allowed to be null,...Ch. 12.3 - List each of the .NET components that allow an...Ch. 12.3 - Prob. 12.10CP
Ch. 12.3 - What component is used to connect interface...Ch. 12.4 - Prob. 12.12CPCh. 12.4 - List the components that are automatically created...Ch. 12.4 - Prob. 12.14CPCh. 12.4 - What kind of information is displayed in the Data...Ch. 12.5 - How can you create a form that shows the columns...Ch. 12.5 - Prob. 12.17CPCh. 12.5 - Prob. 12.18CPCh. 12.6 - Prob. 12.19CPCh. 12.6 - When you create a Details view, what determines...Ch. 12.6 - Prob. 12.21CPCh. 12.6 - Prob. 12.22CPCh. 12.7 - In SQL, what is the purpose of the Select...Ch. 12.7 - What are the instructions for the DBMS to carry...Ch. 12.7 - How are the relational operators used in SQL...Ch. 12.7 - Prob. 12.26CPCh. 12.7 - Prob. 12.27CPCh. 12.7 - Prob. 12.28CPCh. 12.7 - Prob. 12.29CPCh. 12.7 - In an SQL statement, with what symbol does a query...Ch. 12 - Prob. 1MCCh. 12 - Prob. 2MCCh. 12 - A __________ holds a collection of related data...Ch. 12 - A __________ is a complete set of information...Ch. 12 - A(n) __________ holds an individual piece of...Ch. 12 - A __________ is a unique column value that can be...Ch. 12 - A(n) __________ is a column that contains unique...Ch. 12 - A __________ is a source of data with which the...Ch. 12 - A __________ connects to a data source and can...Ch. 12 - Prob. 10MCCh. 12 - A __________ is a component that can connect user...Ch. 12 - Prob. 12MCCh. 12 - A __________ can display an entire database table...Ch. 12 - A __________ is a set of individual controls that...Ch. 12 - Prob. 15MCCh. 12 - Prob. 16MCCh. 12 - Prob. 17MCCh. 12 - Prob. 18MCCh. 12 - __________, which stands for __________, is a...Ch. 12 - __________ are instructions for the DBMS to carry...Ch. 12 - In SQL, you use the __________ to retrieve the...Ch. 12 - A(n) __________ is an SQL statement that is stored...Ch. 12 - The __________ describes the contents of a...Ch. 12 - Prob. 1TFCh. 12 - The DBMS works directly with the data and sends...Ch. 12 - The data that is stored in a database is organized...Ch. 12 - Each column in a table must have a name.Ch. 12 - When you create a database table, the data types...Ch. 12 - When working with the data in a database table,...Ch. 12 - If a column in a database table contains no data,...Ch. 12 - An application works directly with a database,...Ch. 12 - Rather than showing multiple rows at once, a...Ch. 12 - Prob. 10TFCh. 12 - String comparisons in SQL are case sensitive.Ch. 12 - Prob. 1SACh. 12 - Briefly describe the layered nature of an...Ch. 12 - What is the data that is stored in a row of a...Ch. 12 - Are the data types used when creating a database...Ch. 12 - How do you create a primary key for a table with...Ch. 12 - Prob. 6SACh. 12 - Instead of working with the database directly,...Ch. 12 - What control can be used to display an entire...Ch. 12 - Prob. 9SACh. 12 - In SQL, what statement do you use to retrieve...Ch. 12 - Prob. 11SACh. 12 - Prob. 1AWCh. 12 - Write a Select statement that returns all the...Ch. 12 - Write a Select statement that returns only the...Ch. 12 - Write a Select statement that returns the...Ch. 12 - Write a Select statement that returns the...Ch. 12 - Write a Select statement that returns all the...Ch. 12 - Write a Select statement that returns the...Ch. 12 - Write a Select statement that returns the...Ch. 12 - Personnel Database Use Visual Studio to create a...
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