Glossary
- UI
- User interface.
- unary message
- A message that has no arguments. size is an example of a
unary message.
- uniform resource locator (URL)
- A standard identifier for a resource on the World Wide Web, used by a Web
browser to initiate a connection. The URL includes the communications
protocol to use, the name of the server, and path information identifying the
object to be retrieved on the server.
- unload
- A system operation that removes a software component from an image by
unlinking it.
- URL
- See uniform resource locator.
- user interface (UI)
- The hardware, software, or both that enables a user to interact with a
computer. In VisualAge, user interface normally refers to
the visual presentation with which a user interacts and its underlying
software.
- user object
- A system component that represents a person who can use a library.
See also system component.
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