Grady Booch quote: “Object-oriented design is a method of design encompassing the process of object-oriented decomposition and a notation f…”

“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 (1955) American software engineer

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

“Designed as a companion volume to the acclaimed Object-Oriented Analysis, this book focuses on the middle part of the software lifecycle: the activity of design. It shows readers how to apply object-oriented design, and how to tailor and expand the method to suit specific organization and project needs. Readers will explore the major issues in OOD; the role of OOD in the systems lifecycle; how to use graphical notation; strategies for creating design; and hints for evaluating the efficiency of a design created with OOD. For software engineers and other users undertaking real-world systems development projects and designing overall software architecture for systems will find this reference approach to improving systems design indispensable.”

Ed Yourdon (1944–2016) American software engineer and pioneer in the software engineering methodology

Abstract.
Object-oriented design (1991)

“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 (1955) American software engineer

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

“Object-oriented design is the roman numerals of computing.”

Rob Pike (1956) software engineer

Rob Pike (2004) comment in comp.os.plan9 http://groups.google.com/group/comp.os.plan9/msg/006fec195aeeff15 group at groups.google.com, 02-03-04

“Like structured design, the term object-oriented design (OOD) means different things to different people. For example, OOD has been used to imply such things as”

Edward V. Berard

The design of individual objects, and/or the design of the individual methods contained in those objects
The design of an inheritance (specialization) hierarchy of objects
The design of a library of reusable objects
The process of specifying and coding of an entire object-oriented application
The term nonformal is used to describe approaches to OOD that are not well defined, step-by-step, or repeatable, such as those that emphasize the design of individual objects, specialization (inheritance) hierarchies, and libraries of objects...
Abstract
Object‐Oriented Design (2002)

“The control objects model functionality that is not naturally tied to any other object… We do not believe that the best (most stable) systems are built by only using objects that correspond to real-life entities, something that many other object-oriented analysis and design techniques claim… Behavior that we place in control objects will, in other methods, be distributed over several other objects, making it hard to change this behavior.”

Ivar Jacobson (1939) Swedish computer scientist

Source: Object-Oriented Software Engineering: A Use Case Driven Approach (1992), p. 133 as cited in: " Object Oriented Software Engineering: A Use Case Driven Approach Ivar Jacobson, et al. (1992) http://tedfelix.com/software/jacobson1992.html", Book review by Ted Felix on tedfelix.com, 2006.

“Object-oriented programming languages support encapsulation, thereby improving the ability of software to be reused, refined, tested, maintained, and extended. The full benefit of this support can only be realized if encapsulation is maximized during the design process.
We argue that design practices which take a data-driven approach fail to maximize encapsulation because they focus too quickly on the implementation of objects. We propose an alternative object-oriented design method which takes a responsibility-driven approach. We show how such an approach can increase the encapsulation by deferring implementation issues until a later stage.”

Rebecca Wirfs-Brock (1953) American software engineer

Source: Object-oriented design: a responsibility-driven approach (1989), p. 71: Abstract

“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.”

James Rumbaugh (1947) Computer scientist, software engineer

James Rumbaugh, Ivar Jacobson & Grady Booch (1998) The Unified Modeling Language Reference Manual. p. 1

“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 (1955) American software engineer

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

“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.”

Ivar Jacobson (1939) Swedish computer scientist

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

“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.”

Help us to complete the source, original and additional information

Grady Booch 35

Related quotes

Related topics