Concurrency control and integrity preservation for the `RIM' DBMS

  • Authors:
  • Pentti A. Honkanen

  • Affiliations:
  • Georgia State University

  • Venue:
  • ACM SIGMIS Database
  • Year:
  • 1984

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Abstract

The Relational Information Management System (RIM, specifically, RIM-5) is a relational DBMS [RIM82] which has a syntax that is similar to SOL/DS [AST76, DAT81], but not as powerful, i.e., nested SELECT commands are not supported. However, it and its microcomputer counterpart, MicroRIM, are still powerful DBMS's. The one area in which the RIM system falls short is in concurrency control. In order to maintain integrity, the current version locks out the entire database during update operations. This paper presents a solution to maintaining integrity in the RIM system at a much more local level.