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An introduction to design and software design, in order to set up an underlying, supportive foundation to help the reader recognize both the relevance and the advantages of software design.

Before setting up to the task of studying and applying Software Architecture, it is convenient to know where – within the range of Software Engineering Body of Knowledge – Software Architecture should be placed as a discipline. Besides, the implementation of Software architectural design is the first of two activities that comprise the Software Design Knowledge Area (the other activity is that of software detailed design). As part of Software Design, Software Architecture is a mixture of method and creativity. Software Architecture lies beyond the range of this book whose purpose does not include the teaching of creativity. Creativity is something that results from experience, thus it is not the purpose of this book teach it. However, the authors seek to impart the knowledge needed for you to create software system architectures.

A sound knowledge of the fundamentals of Software Design is certainly needed for you to take up the material covered in this book. Therefore, this chapter will provide you with an overall view of these fundamentals, expounding them further by setting up an underlying, supportive foundation to help you recognize both the relevance and the advantages of software design. In other words, it will provide you with the necessary knowledge that will enable you to:

  • Recognize the basic concepts required to design software
  • Describe a design problem by way of its fundamental elements
  • Identify design enabling techniques and explain their benefits
  • Differentiate low-level design activities from high-level design activities, and know when to apply either of them.

Design and software design

The relevance of the practice (and, therefore, of the study) of Software Design can be explained by the ever-increasing complexity of software systems. Because of such complexity, the risk of building a system that will not meet its goals is indeed too high.

In order to avoid such a risk, the rule of thumb of any engineering process for building a complex artifact is to build it according to a pre-established plan, e.g. , to design it before building it. Therefore, the purpose of design is twofold. One is to allow you to build models that can be analyzed and evaluated against their aimed objectives before they are actually built; and the other is to serve as a guide for the artifact assemblage after it has passed both the analysis and the evaluation phases.

Characteristics of design

There are several reasons for designing an artifact before building it. The following paragraphs describe some of them.

Design enables early evaluation. The building process of an artifact can be very expensive in terms of time and money. Because it helps to ensure that the right thing is being built, those involved in this process desire the possibility of early evaluation. Since the products of design process often permit this kind evaluation and it often costs less than actually building the artifact, designing and early evaluating the artifact before building are recommended in order to save time and money.

Questions & Answers

what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Software architecture for experts-to-be. OpenStax CNX. Sep 16, 2008 Download for free at http://cnx.org/content/col10574/1.1
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