Grady Booch: Objection

“In a quality object-oriented software system, you will find many classes that speak the language of the domain expert”

Grady Booch

Source: Object Solutions: Managing the Object-Oriented Project. (1996), p. 39; as cited in: Journal of Database Management. Vol 10-11. p. 33

“Object-oriented design is a method of design encompassing the process of object-oriented decomposition and a notation for depicting both logical and physical as well as static and dynamic models of the system under design.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 37

“Structured design does not scale up well for extremely complex systems, and this method is largely inappropriate for use with object-based and object-oriented programming languages.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 19

“A class is a set of objects that share a common structure and a common behavior”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 513

Behavior

“Perhaps the greatest strength of an object-oriented approach to development is that it offers a mechanism that captures a model of the real world.”

Grady Booch

Grady Booch (1986) Software Engineering with Ada p. 220. cited in: David J. Gilmore et al. (1994) User-Centred Requirements for Software Engineering Environments. p. 108

World

“Object-oriented analysis is a method of analysis that examines requirements from the perspective of the classes and objects found in the vocabulary of the problem domain.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 37

Problem

“The Uniﬁed Modeling Language (UML) is a general-purpose visual modeling language that is used to specify, visualize, construct, and document the artifacts of a software system. It captures decisions and understanding about systems that must be constructed. It is used to understand, design, browse, conﬁgure, maintain, and control information about such systems. It is intended for use with all development methods, lifecycle stages, application domains, and media. The modeling language is intended to unify past experience about modeling techniques and to incorporate current software best practices into a standard approach. UML includes semantic concepts, notation, and guidelines. It has static, dynamic, environmental, and organizational parts. It is intended to be supported by interactive visual modeling tools that have code generators and report writers. The UML speciﬁcation does not deﬁne a standard process but is intended to be useful with an iterative development process. It is intended to support most existing object-oriented development processes.”

Grady Booch

James Rumbaugh, Ivar Jacobson, & Booch (1999) The Unified Modeling Language Reference Manual. p. 1

Understanding , Support , Decision , Past

“Is object-oriented technology mature enough upon which to build industrial-strength systems? Absolutely. Does this technology scale? Indeed. Is it the sole technology worth considering? No way. Is there some better technology we should be using in the future? Possibly, but I am clueless as to what that might be.
It is dangerous to make predictions, especially in a discipline that changes so rapidly, but one thing I can say with confidence is that I have seen the future, and it is object-oriented.”

Grady Booch

Source: Object Solutions: Managing the Object-Oriented Project. (1996), p. 277

Way , Confidence , Change , Future

“The object-oriented paradigm is useful when building software systems where there is a hierarchy defined as a ranking or ordering of abstractions.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 54

“Philosophy and cognitive science have contributed to the advancement of the object model. The idea that the world could be viewed either in terms of objects or processes was a Greek innovation, and in the seventeenth century, we find Descartes observing that humans naturally apply an object-oriented view of the world. In the twentieth century, Rand expanded upon these themes in her philosophy of objectivist epistemology. More recently, Minsky has proposed a model of human intelligence in which he considers the mind to be organized as a society of otherwise mindless agents. Minsky argues that only through the cooperative behavior of these agents do we find what we call intelligence.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 34-35

World , Behavior , Intelligence , Idea

“In object-oriented analysis, we seek to model the world by identifying the classes and objects that form the vocabulary of the problem domain, and in object-oriented design, we invent the abstractions and mechanisms that provide the behavior that this model requires.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 141

World , Behavior , Problem

“Object-oriented programming is a method of implementation in which programs are organized as cooperative collections of objects, each of which represents an instance of some class, and whose classes are all members of a hierarchy of classes united via inheritance relationships.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 35

“An operation is some action one object performs upon another in order to elicit a reaction.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 80

“The development of the Model Driven Architecture (MDA) standards by the Object Management Group”

Grady Booch

OMG
The Limits of Software

“Whereas object-oriented analysis typically focuses upon one specific problem at a time, domain analysis seeks to identify the classes and objects that are common to all applications within a given domain, such as missile avionics systems, compilers, or accounting software.”

Grady Booch

Source: Object-oriented design: With Applications, (1991), p. 142

Problem , Time