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A History And Evaluation Of IBM System R..pdf

SystemR.pdf
Preview of A history and evaluation of IBM System R.
🔗 Source: people.eecs.berkeley.edu
📊 Size: 1.47 MB
📄 Pages: 15 pages
⬇️ Downloads: 85

Summary

System R is an experimental database system that demonstrates the usability advantages of the relational data model can be realized in a system with complete function and high performance required for everyday production use. The system provides a high-level, nonnavigational user interface, supports different types of database use, and protects the integrity of the database in a concurrent-update environment. The project has three phases: Phase Zero (1974-1975) developed the SQL user interface, Phase One (1975-1977) implemented a multi-user system, and Phase Two (1977-1979) refined the system and evaluated its performance. The system achieves data independence by providing a high-level user interface and supporting a very high-level language for framing requests for data without specifying algorithms for processing the requests.

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Description

System R is an experimental database system that demonstrates the usability advantages of the relational data model can be realized in a system with complete...

Technical Information

  • File Format: PDF
  • File Size: 1.47 MB
  • Pages: 15
  • Language: EN
  • Total Downloads: 85
  • Last Updated: 2 weeks ago

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