July 1990 - Vol. 33 No. 7
Features
Personal computing: simple complexity and COMDEX
One of today's emerging paradigms is the view that complex behavior or form can emerge from the interaction of relatively simple components, if you have enough of them…
From Washington: budget FY 1991: the numbers tell the R&D story
This is the time of year when talk turns to fiscal budgets. In Washington, however, such banter typically involves astronomical sums of money.When President Bush released…
The politics of standards and the EC
European legislation and power struggles in the standards arena are sparking fear of technical barriers to trade and prompting the American standards community to…
Constraint logic programming languages
Constraint Logic Programming (CLP) is an extension of Logic Programming aimed at replacing the pattern matching mechanism of unification, as used in Prolog, by a more…
The Prolog III programming language extends Prolog by redefining the fundamental process at its heart: unification. This article presents the specifications of this new…
The 20th annual ACM North American computer chess championship
Despite entering ranked almost a class above the field, a last-round loss forced DEEP THOUGHT to settle for a first-place tie with HITECH at the 20th Annual ACM North…
Agenda: a personal information manager
The free-form, evolving, personal information that people deal with in the course of their daily activities requires more flexible data structures and data management…
Object subclass hierarchy in SQL: a simple approach
The object subclass hierarchy is a useful way of modeling property and behavior inheritance. It can be implemented on a relational DBMS using views.