Introduction To Software Engineering 2nd Edition Ronald J. Leach - Solutions

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6.3. What is the purpose of domain analysis? How is it related to the concept of requirements patterns?
6.4. Is it possible to develop an effective analysis model without developing all four elements shown in Figure 6.3? Explain.
6.5. You have been asked to build one of the following systems:a. a network-based course registration system for your university.b. a Web-based order-processing system for a computer store.c. a simple invoicing system for a small business.d. an Internet-based cookbook that is built into an electric
6.6. The department of public works for a large city has decided to develop a Web-based pothole tracking and repair system (PHTRS). A description follows:
6.7. Write a template-based use case for the SafeHome home management system described informally in the sidebar following Section 6.5.4.
6.8. Develop a complete set of CRC model index cards on the product or system you chose as part of Problem 6.5.
6.9. Conduct a review of the CRC index cards with your colleagues. How many additional classes, responsibilities, and collaborators were added as a consequence of the review?
6.10. What is an analysis package and how might it be used?
1. Sensor and actuator classes have a common interface.
2. Class attributes can only be accessed through messages, and the class decides whether or not to accept the message. For example, if a value of an actuator is set above a maximum value, then the actuator class may not accept the message, or it might use a default maximum value.
3. The complexity of the system is potentially reduced because of the uniformity of interfaces for actuators and sensors.
Q1: What output video resolution is provided by SafeHome cameras?
Q2: What occurs if an alarm condition is encountered while the camera is being monitored?
Q3: How does the system handle cameras that can be panned and zoomed?
Q4: What information should be provided along with the camera view? (For example, location? time/date? last previous access?)
How should navigation errors be handled?
Should navigation to related groups of elements be given priority over navigation to a specific element?
Should navigation be accomplished via links, via search-based access, or by some other means?
Should certain elements be presented to users based on the context of previous navigation actions?
Should a navigation log be maintained for users?
Should a full navigation map or menu (as opposed to a single “back” link or directed pointer) be available at every point in a user’s interaction?
Should navigation design be driven by the most commonly expected user behaviors or by the perceived importance of the defined WebApp elements?
Can a user “store” his previous navigation through the WebApp to expedite future usage?
For which user category should optimal navigation be designed?
How should links external to the WebApp be handled? Overlaying the existing browser window? As a new browser window? As a separate frame?
7.1. What is the fundamental difference between the structured analysis and object-oriented strategies for requirements analysis?
7.2. In a data flow diagram, does an arrow represent a flow of control or something else?
7.3. What is “information flow continuity” and how is it applied as a data flow diagram is refined?
7.4. How is a grammatical parse used in the creation of a DFD?
7.5. What is a control specification?
7.6. Are a PSPEC and a use case the same thing? If not, explain the differences.
7.7. There are two different types of “states” that behavioral models can represent. What are they?
7.8. How does a sequence diagram differ from a state diagram. How are they similar?
7.9. Suggest three requirements patterns for a modern mobile phone and write a brief description of each. Could these patterns be used for other devices. Provide an example.
7.10. Select one of the patterns you developed in Problem 7.9 and develop a reasonably complete pattern description similar in content and style to the one presented in Section 7.4.2.
7.11. How much analysis modeling do you think would be required for SafeHomeAssured.com? Would each of the model types described in Section 7.5.3 be required?
7.12. What is the purpose of the interaction model for a WebApp?
7.13. It could be argued that a WebApp functional model should be delayed until design.Present pros and cons for this argument.
7.14. What is the purpose of a configuration model?
7.15. How does the navigation model differ from the interaction model?
Give the details of the design of the interface to a database for our major software project. Be sure that you specify the fields in the database.
This question considers the ramifications of a considerable change to the requirements on the design of the software. The first change is that the customer now wants a web-based user interface instead of one that is PC-based. Determine the changes that need to be made to the requirements to have a
This question considers the ramifications of a considerable change to the requirements on the design of the software. The second change is that the customer now wants to use a cloud for data storage instead of one that is PC-based. Determine the changes that need to be made to the requirements to
Examine some software you have previously written from the perspective of coding style. Are there any improvements you would make? Why?
Examine a reasonable amount of the source code available to you in a relatively large project that you did not write yourself. (You might look at software available from the Internet if you cannot find any locally.) List some of the coding standards that must have been in place during the
There are several differences between the coding standards listed in this chapter. Give an explanation for these differences.
Determine if your software development environment has a “pretty printer” available. If so, determine if it is flexible enough to meet multiple coding standards.
Develop a C macro or a C++ inline function to compute the pow() function. Compare the efficiency of your iteration with that of the built-in pow() function.
Consider the simple C or C++ language statements:a ++;anda = a + 1;For integer variables they are completely equivalent. For pointers in C and C++, the assignment a = a + 1 indicates pointer arithmetic; the pointer a (which represents a location) is set to the location computed by the expression a
Devise an experiment to determine which of two distinct implementations of the algorithm presented in Section 5.1 is fastest. Recall that the purpose of these algorithms was to initialize a square matrix to alternating ones and negative ones. Implement the algorithm so that the code runs as fast as
Use the profiler option on your compiler to examine the code fragment at the end of Section 5.1. (As stated in Section 5.2, the purpose of a profiler is to create executable code that includes timing information on the functions and operating system-level operations that the program spends most of
Write a program that will solve a system of linear equations of the form AX = B, where A is an n-by-n array of floating point numbers that has all entries other than those on the main diagonal equal to 0, X is an n-by-1 array of floating point numbers that represents the array of unknowns to be
The next program is an example of poor programming practice. It is based on an actual program that was used to control the display of a moving object. The main consideration at that time was speeding up the program as much as possible. That is your objective here. Some of the code was the actual
List all the black-box test cases for the source code given in Example 6.3. Which test cases do you think are the most important? Why?Data from Example 6.3Source Code for the Sample Function That Was Specified in Example 6.2i = 1; // f1done = false;new_one = true;while (!done){if (new_one){if (i
List all white-box test cases for the source code given in Example 6.3. Which test cases do you think are the most important? Why?Data from Example 6.3Source Code for the Sample Function That Was Specified in Example 6.2i = 1; // f1done = false;new_one = true;while (!done){if (new_one){if (i < =
What is the minimum number of test cases to ensure that every path in Example 6.3 is tested?Data from Example 6.3Source Code for the Sample Function That Was Specified in Example 6.2i = 1; // f1done = false;new_one = true;while (!done){if (new_one){if (i < = N) // p1{j = 1;// f2new_one =
What is the minimum number of test cases to ensure that every statement in Example 6.3 is tested?Data from Example 6.3Source Code for the Sample Function That Was Specified in Example 6.2i = 1; // f1done = false;new_one = true;while (!done){if (new_one){if (i < = N) // p1{j = 1;// f2new_one =
Write a test harness to exercise the testing of the code fragment in Example 6.3.Data from Example 6.3Source Code for the Sample Function That Was Specified in Example 6.2i = 1; // f1done = false;new_one = true;while (!done){if (new_one){if (i < = N) // p1{j = 1;// f2new_one = false;rest =
Examine a common software application. Determine a set of black-box test cases that you would use if you were in charge of testing this software.
Devise a new class to describe floating point numbers. The precision of the floating point numbers will be part of the class. The three precisions to be considered are float, double, and long double.
List the special cases that should be tested for correct treatment of overloading of the + operator in Example 6.5. Also, list the special cases needed for testing of the << and assignment operators.Data from Example 6.5An Example of Testing Object-Oriented Programs#includeclass
(For those of you who are practicing software engineers.) Choose one of the first 123 research problems listed in this chapter and determine how the issue affects your organization.
List all test cases that you believe are necessary to test the objects defined in Example 6.5.Data from Example 6.5An Example of Testing Object-Oriented Programs#includeclass Complex{public:double real;double imag;Complex(){ double real = 0.0; double imag = 0.0;}double realpart (Complex z) { return
Develop delivery guidelines for the major software project that we have been considering throughout this book.
Develop installation guidelines for the major software project that we have been considering throughout this book.
Examine a commercially available software package with which you are familiar. Which types of documentation were made available with the software? Evaluate the readability of the documentation.
Examine the source code for the large software project that we have been considering throughout this book. The only documentation provided is internal documentation, since it is restricted to the source code. Evaluate the readability of the documentation.
Write external documentation for the large software project that we have been considering throughout this book.
Write both user and operations manuals for the large software project that we have been considering throughout this book.
Write a design rationale for the large software project that we have been considering throughout this book.
The first change that the customer now wants is a web-based user interface instead of one that is PC based. What changes need to be made to the testing and integration processes?
The second change that the customer now wants is to use a cloud for data storage instead of one that is PC based. What changes need to be made to the testing and integration processes?
Examine the dialogue we presented in Chapter 3, when we developed the requirements for the large software project that we have discussed throughout this book. Based on that dialogue, what changes do you expect to be made to the software during its useful lifetime?
Compare the changes made in the software in the major project with the ones you might have predicted in the previous question.
Change the major software project to allow the separation of the computational portion from the user interface. Then incorporate a client–server relationship, with the computation done on a server and the user interface on a client machine.
Change the user interface for the current system in the major software project to run on Windows 8.1.
Change the user interface for the current system in the major software project to use the Apple user interface.
Change the user interface for the current system in the major software project to use the Linux-based operating system underlying the Apple user interface. (This Linux-based system is called Darwin.)
Change the user interface for the current system in the major software project to become web-based, with the metrics computations performed on servers or, perhaps, a set of individual servers each hosting many source code files.
Change the user interface for the current system in the major software project to run its user interface based primarily on tablets, such as, say, a banking app with its connection to a remote database.
The first change is that the customer now wants a web-based user interface instead of one that is PC based. What changes need to be made to the maintenance processes? Is a new maintenance plan needed?
The second change is that the customer now wants to use a cloud for data storage instead of one that is PC based. What changes need to be made to the maintenance process? Is a new maintenance plan needed?
Read a recent issue of one of the following journals: IEEE Software, IEEE Computer, Communications of the ACM, ACM Transactions on Software Engineering and Methodology, IEEE Transactions on Software Engineering, Journal of Systems and Software, Software: Practice and Experience, Experimental
In Section 4.19, we mentioned that we should consider both large-scale components and matching design patterns in order to make our software engineering effort more efficient. We chose to consider large-scale components in that discussion. Determine one or more relevant design patterns and use them
Chapter 3 presented a hypothetical dialogue during our requirements elicitation. The initial requirements were later changed to allow for the web-based interface whose architecture was described in this chapter. Modify the architectures we presented here to reflect the high-level design of this
(For those of you who are considering graduate school.) Choose one of the first 99 research problems listed in this chapter and start working on a PhD in computer science.
Read a company internal report that describes a project. How would you classify the report: case study, comparative study, or controlled experiment? Write a critique of the report, using the ideas given in this chapter.
The user interface was to be written in either C or C++ to allow command-line arguments. Thus, this subsystem is very easy to design. It has two major features: interfacing with the operating system to obtain the command-line arguments and determining which arguments are to be passed on to the next
Design the installation subsystem for the major software engineering project.
How does the design change if the data is to be collected in a database program instead of a spreadsheet?
What is the effect of moving the project to a different operating system, such as one running Linux or Apple Yosemite, on the assumptions made in the design of the first subsystem for the user interface?
Suppose that we wished to add a graphical user interface to the major software engineering project. An electronic list of such tools can be found at the URL http://www .cs.cmu.edu/afs/cs.cmu.edu/user/bam/www/toolnames.html. This website is managed by Brad Myers, who is a well-known researcher in
Expand the design of the major software engineering project to include analysis of source code files written in Java.
This question considers the ramifications of a considerable change to the requirements. This change is that the customer now wants to use open source software and the Linux environment as much as possible instead of one that is based on the Microsoft Windows environment. Determine the changes that
This question considers the ramifications of a considerable change to the requirements. The second change is that the customer now wants to use a cloud for data storage instead of one that is PC-based. Determine the changes that need to be made to the requirements to have cloud storage for the
This question considers the ramifications of a considerable change to the requirements. The first change is that the customer now wants a web-based user interface instead of one that is PC-based. Determine the changes need to be made to the requirements to have a different type of user interface,
What attributes would you expect to have for a project that is attempting to complete our major project using an agile software process? Does your project team possess these attributes at this point in this course? Begin your answer by assessing your team’s knowledge of the application domain.
Develop a detailed project plan for the major software project we introduced in this chapter.
Change the requirements to allow the software to have a web-based interface. Apply the ignorance hiding technique of Section 3.4.1 to analyze these new requirements. What sort of technology assessment must take place? Which existing requirements must be changed?
Write a set of use cases for the requirements of our continuing software project as they were developed in Section 3.18 and Summary of this chapter.

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