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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

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 to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket 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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