Managing File Subsystem Data Streams for Databases on Networked Systems

Abstract

One important activity for networked database systems that distribute data across several workstations is moving data between the file and network subsystems. It is possible to create data streams in the operating system kernel. If provided on a system, they allow user level processes to request transfer of data without having to copy it into the user space. This is particularly useful for data whose content or format is not modified during the transfer. In this paper we present a conservative criterion for access and control for the management of such data streams for databases in a networked environment, and define the implementation requirements for achieving the criterion. The approach is to maintain at least the current level of access management. We define the specific implementation semantics that this criterion entails.

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Document Details

Document Type
Technical Report
Publication Date
Jul 02, 1996
Accession Number
ADA438521

Entities

People

  • John Baras
  • Nick Roussopoulos
  • Sandeep K. Gupta
  • Stephen Kelly

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Communication Networks
  • Computer Access Control
  • Data Transmission
  • Database Management Systems
  • Databases
  • Department Of Defense
  • Digital Information
  • Environment
  • Information Operations
  • Networks
  • Operating Systems
  • Scheduling (Production)
  • Semantics
  • Standards
  • Universities
  • User Interface

Fields of Study

  • Computer science

Readers

  • Instructional Design and Training Evaluation.
  • Parallel and Distributed Computing.

Technology Areas

  • Space