Accession Number : ADA192264

Title :   SIMS: Single Interface to Multiple Systems.

Descriptive Note : Research rept.,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA MARINA DEL REY INFORMATION SCIENCES INST

Personal Author(s) : Pavlin, Jasmina ; Bates, Raymond L

PDF Url : ADA192264

Report Date : Feb 1988

Pagination or Media Count : 26

Abstract : This report describes the Single Interface to Multiple Systems (SIMS) project, which is developing a tool to automatically invoke services to perform the tasks of information systems users. Most of these tasks involve multiple software servers that differ vastly in their functional capabilities, their view of the world, and their input and output languages (e.g., databases and expert systems). Before a user can determine if a server can perform the required task, he must first understand the language and services provided by each server, and then express the task in the terms used by the server. In contrast, SIMS allows the user to specify a task in a service-independent language. Our approach is dynamic in that SIMS determines which server will satisfy the request when the task is defined. SIMS performs logical integration, where the servers remain separate, but a common model makes them appear as if they were providing a single virtual service. Logical and dynamic integration allow the system of which SIMS is a part to be more easily designed and maintained. Keywords: Code reusability, Error recovery, Execution monitoring, Framework, Multiple software servers, Hierarchical planning, Software integration, User interfaces.

Descriptors :   *COMPUTER PROGRAMS, *DATA BASES, *INFORMATION RETRIEVAL, ERRORS, HIERARCHIES, INFORMATION SYSTEMS, MODELS, MONITORING, PLANNING, RECOVERY, USER NEEDS, INTEGRATED SYSTEMS, DYNAMIC PROGRAMMING, ARTIFICIAL INTELLIGENCE, REUSABLE EQUIPMENT, MAN COMPUTER INTERFACE, PROGRAMMING LANGUAGES

Subject Categories : Computer Programming and Software
      Information Science

Distribution Statement : APPROVED FOR PUBLIC RELEASE