“A use case is a complete course of events in the system, seen from a user’s perspective.”

Source: Object-Oriented Software Engineering: A Use Case Driven Approach (1992), p. 157.

Adopted from Wikiquote. Last update June 3, 2021. History

Help us to complete the source, original and additional information

Do you have more details about the quote "A use case is a complete course of events in the system, seen from a user’s perspective." by Ivar Jacobson?
Ivar Jacobson photo
Ivar Jacobson 6
Swedish computer scientist 1939

Related quotes

Ivar Jacobson photo

“When a user uses the system, she or he will perform a behaviorally related sequence of transactions in a dialogue with the system. We call such a special sequence a use case.”

Ivar Jacobson (1939) Swedish computer scientist

Source: Object-Oriented Software Engineering: A Use Case Driven Approach (1992), p. 127; as cited in: Journal of Object-oriented Programming Vol 10, Nr 2-9. p. 32.

Barbara W. Tuchman photo

“In the midst of events there is no perspective.”

Source: A Distant Mirror (1978), p. 454

Andrew S. Tanenbaum photo

“System designers who do not allow users to type far ahead ought to be tarred and feathered, or worse yet, be forced to use their own system.”

Andrew S. Tanenbaum (1944) Dutch computer scientist

Operating Systems Design and Implementation, 3rd ed., p. 310.

Gerrit Blaauw photo

“The architecture of a system can be defined as the functional appearance of the system to the user.”

Gerrit Blaauw (1924–2018) Dutch computer scientist

Blaauw (1972) cited in: Gerritt A Blaauw (1976) Digital system implementation. p. 6

Richard Stallman photo

“I'd just like to interject for a moment. What you’re referring to as Linux, is in fact, GNU/Linux, or as I’ve recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX. Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called “Linux”, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine’s resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called “Linux” distributions are really distributions of GNU/Linux.”

Richard Stallman (1953) American software freedom activist, short story writer and computer programmer, founder of the GNU project

Internet meme commonly attributed to Stallman made by an unknown source.
Misattributed

Justus Dahinden photo
Jef Raskin photo

“The system should treat all user input as sacred.”

The Humane Interface (2001)

Edsger W. Dijkstra photo

Related topics