<< Chapter < Page Chapter >> Page >
This module provides an introduction to the principles and concepts relevant to the software design. It examines the role and context of the design activity as a form of problem-solving process, describes how this is supported by current design methods, and considers the strategies, strengths, limitations, and main domains of application of these methods.

Introduction

Software design is a process of defining the architecture, components, interfaces, and other characteristics of a system or component and planning for a software solution. After the purpose and specifications of software is determined, software developers will design or employ designers to develop a plan for a solution.

A software design may be platform-independent or platform-specific, depending on the availability of the technology called for by the design.

Viewed as a process, software design is the software engineering life cycle activity in which software requirements are analyzed in order to produce a description of the software’s internal structure that will serve as the basis for its construction. More precisely, a software design (the result) must describe the software architecture and the interfaces between those components. It must also describe the components at a level of detail that enable their construction.

Software design plays an important role in developing software: it allows software engineers to produce various models that form a kind of blueprint of the solution to be implemented. We can analyze and evaluate these models to determine whether or not they will allow us to fulfill the various requirements. We can also examine and evaluate various alternative solutions and trade-offs. Finally, we can use the resulting models to plan the subsequent development activities, in addition to using them as input and the starting point of construction and testing.

In a standard listing of software life cycle processes such as IEEE/EIA 12207 Software Life Cycle Processes, software design consists of two activities that fit between software requirements analysis and software construction:

  • Software architectural design (sometimes called top-level design): describing software’s top-level structure and organization and identifying the various components.
  • Software detailed design: describing each component sufficiently to allow for its construction.

Concepts of software design

The concepts, notions, and terminology introduced here form an underlying basis for understanding the role and scope of software design.

General design concepts

Software is not the only field where design is involved. In the general sense, we can view design as a form of problem-solving. For example, the concept of a wicked problem–a problem with no definitive solution–is interesting in terms of understanding the limits of design. A number of other notions and concepts are also of interest in understanding design in its general sense: goals, constraints, alternatives, representations, and solutions.

Context of software design

To understand the role of software design, it is important to understand the context in which it fits, the software engineering life cycle. Thus, it is important to understand the major characteristics of software requirements analysis vs. software design vs. software construction vs. software testing.

Questions & Answers

how to do documents in the computer
Mark Reply
Which of these are standards for assessing software processes
own Reply
team a found 342 errors during the software engineering process prior to release. team b found 184 errors. what additional measures would have to be made for projects a and b to determine which of the teams eliminated errors more efficiently? what metrics would you propose to help in making the determination? what historical data might be useful?
Kaviya Reply
it's depend upon software testing and debugging
OMKAR
what is coding
Waswa Reply
programming languages is a coding it is also used software development, designing, modeling, etc..
OMKAR
presently I work as a computer engineering what course can I study in any computer institute to enable me promoting myself
Ichaba
AND here lot of course
OMKAR
How to calculate the basic salary of a payroll in Java coding?
Adjei Reply
ত্তচুরভহব
Parvez
hello
Bahadur
but we have tobe serious in k.dge.. what is the meaning of java coding if you are gineous you will answer me
Eyiba
Quids on software engineering
Enongene Reply
software testing practice
Prerana
Ho
Rang
definition of software
Baba Reply
define system ,concepts of system and types of system?
Gurmeet Reply
iom
ADNAN
hello
arsh
hari Paulus hai
Hari
System is the way of Execution or a set of principles to do something or any task is called System.
Ayesha
There are many infinite forms and Types of System in different fields as well.
Ayesha
TELL ME ABOUT MAINFRAME?
OMKAR
hi
Md
System is the way of Execution or a set of principles to do something or any task is called System.
Sazed
is very important software engineer or not.
Riyanshu Reply
very important
arsh
2d
Dv
hello
Md
what is software engineering
Ravindra Reply
Software engineering is a detailed study of engineering to the design, development and maintenance of software
arsh
what is salary of software engineer
Akash Reply
it depend on organization's and quality
josephat
I think average salary 80000us dollars per year
arsh
what are naturs of software Engineering
BANDARU Reply
what is the nature of saftware
BANDARU Reply
what is nature of sotfware
BANDARU
hi
khushboo
can anyone help me I need to learn
khushboo
code debug
khushboo
in eclipse java
khushboo
@janak can u suggest
khushboo
what is the salary of software engineer
Akash
per month
Akash
please tell me what is the salary of software engineer per monthe
Akash
HELLO ENGINEERS ✍
OMKAR
which sdlc mode l is suitable for atm banking system
Rakesh Reply
how can I create my own software?
David
HUAWEI.ABBULLAG.45720891
Abdula Reply

Get the best Software engineering course in your pocket!





Source:  OpenStax, Software engineering. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10790/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Software engineering' conversation and receive update notifications?

Ask