Accession Number : ADP008655

Title :   Optical Database Machines,

Corporate Author : SYRACUSE UNIV NY DEPT OF ELECTRICAL AND COMPUTER ENGINEERING

Personal Author(s) : Berra, P. B.

Report Date : 22 MAY 1992

Pagination or Media Count : 3

Abstract : Databases have become an important aspect of our daily lives. We encounter them in such diverse fields as airline reservations, stock quotation systems, medical information systems, entertainment, sports and a host of other areas. Database management systems (DBMS) place considerable demands on current computing systems primarily because of the large size of the databases, the general functionality of the DBMS and the stringent time requirements for the retrieval of the data. The large size of the database dictates that secondary storage such as optical and magnetic disks be used and this leads to input/output data accessing difficulties since these memory types are on the order of one million times slower in access time than main memory technology. One of the approaches that has been taken to improve the performance of these systems is that of developing database machines. This approach takes advantage of the technology while utilizing the principles of parallelism, pipelining, decomposition and caching. Since much of the improvement in database systems has come from advances in electronic technology, it is important to consider other technologies. And optics with its inherent speed, high bandwidth and natural parallelism offers some interesting possibilities.

Descriptors :   *DATA BASES, *OPTICAL PROCESSING, OPTICAL DATA, INPUT OUTPUT PROCESSING, ELECTROOPTICS.

Subject Categories : Computer Systems
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE