Software Componentry

software componentry

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cbb = component-based business
cbd = component-based development
cbse = component-based software engineering
odp = open distributed processing

Trends

Myths

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typical services

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papers on CBD

we recommend
CBD books

please read component ecosystems the context for software componentry

web services
concepts & notions
frequently asked questions
presentations

Cetus Links
Objects and
Components

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cbb cbd cbse odp

concepts & notions

frequently asked questions

open distributed processing - open distributed business

component (always software? same as Object?)
encapsulation
interface
plug'n'play
reuse
specification

other notions

What is CBD?

compared with traditional manufacturing
compared with traditional software development
innovation or hype?

What is CBD good for?

How does CBD alter the software supply game?

What is the UML good for?

Trends

veryard projects > cbse > trends

	Growth of web services. The advent of web services represents an important stage in the transition of software into tradeable commodities. Software componentry involves a separation of the external services (the "commodity" that provides value to the consumer) from the internal mechanism. Web services takes this separation one step further - so that the mechanism itself is hidden, and the consumer pays for the services rather than the mechanism. Web Services
	Growth of telecoms. While the software industry follows the drama being played out by IBM, Microsoft, Oracle and Sun, the telecoms companies are quietly staking out an important position. Open Distributed Processing
	Growth of biological metaphors. Software components (including so-called intelligent agents) are released into a giant (global) ecosystem. Some move about and reproduce themselves (like animals). Some remain stationary and disseminate copies and links to themselves (like plants). Component Ecosystems
	Extending 'plug-and-play' into the business arena. Constructing solutions from ready-made building blocks (plug-and-play) seems very attractive, not just for software, but for whole business operations. Component-Based Business
	Convergence of engineering and economics. Proper system of metrics - linking engineering characteristics with ecological success and commercial value. Option pricing and the hedonic pricing model may be applied to software components.

Myths of Component-Based Software Engineering

veryard projects > cbse > myths

	The primary task of CBSE is to build software components.	*Wrong.* The whole point is NOT to build components. Not-Building leads to Not-Testing, Not-Maintaining, Not-Monkeying-Around.
	Trust and security can be achieved by installing trustworthy components.	*Wrong.* Trust and security are system-wide properties, and are not localized in a single component.
	A software component satisfies a unique specification.	*Wrong.* If a component satisfies a given specification, it also satisfies all weaker specifications.

Typical Services

veryard projects > cbse > services

We provide a range of consultancy services. For example:

Introduction	We can introduce CBD into your software process. We can focus your software process on achieving software economies of scale.
Investigation	We can investigate CBD opportunities for your business processes or software provision. We can identify and evaluate your options within the software supply chain.
Assessment	We can assess your plans, projects, systems and organizations from a CBD perspective.
Education & training	We can provide training in CBD and related topics.
Execution	We can provide planning, analysis, design, testing and other development services.

We are happy to work with a variety of CBD methods.
Our preference is for the SCIPIO method.

Please contact us to discuss further.

White Papers and Other Materials

veryard projects > cbse > materials

Richard Veryard is now a regular contributor to the CBDi Forum. Please visit for access to more recent material.

title	keywords	date
Component Design (HTML)	connectivity, flexibility, availability, quality, economies of scale, pleasure	May 1999
Component Ecosystems (HTML) The context for CBD	components, encapsulation, reuse, plug'n'play	April 1999
Component Requirements (HTML) Understanding Business Requirements in terms of Components (Acrobat file) Defining Requirements for Software Components (Acrobat file)	requirements	April 1999
Software Component Quality (HTML)	quality, testing	February 1997
Component-Based Development for Y2K and Euro(HTML)	CBD, Year 2000, Euro	January 1999
CBD and ODP Briefing (Acrobat file)		January 1999
SCIPIO white papers

Books on Software Components

veryard projects > cbse > books

title
John Cheesman & John Daniels UML Components A simple process for specifying component-based software Addison Wesley, 2000
Desmond D'Souza & Alan Cameron Wills Objects, Components and Frameworks with UML: The Catalysis Approach Addison-Wesley, 1999
Paul Allen & Stuart Frost Component-Based Development for Enterprise Systems: Applying the SELECT Perspective Cambridge University Press & SIGS Books, 1998
Richard Veryard Component-Based Business: Plug and Play Springer 2001	now available	now available

Books on Patterns

Books on Project Management

Other Books

Object Oriented Books
electronic commerce, intelligent agent Object-Oriented Technology, BPR, HCI, OO Methods. OO Prog

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