from
The Free On-line Dictionary of Computing (8 July 2008)
subject-oriented programming
<programming> Program composition that supports building
{object-oriented} systems as compositions of {subjects},
extending systems by composing them with new subjects, and
integrating systems by composing them with one another
(perhaps with {glue} or adapter subjects).
The flexibility of subject composition introduces novel
opportunities for developing and modularising object-oriented
programs. Subject-oriented programming-in-the-large involves
dividing a system into subjects and writing rules to compose
them correctly. It complements {object-oriented programming},
solving a number of problems that arise when OOP is used to
develop large systems or suites of interoperating or
integrated applications.
IBM subject-oriented programming
(http://research.ibm.com/sop/).
(1999-08-31)