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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

where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
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
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
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
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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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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