The catalog: a flexible structure for data storage

Expert InsightsPublished 1966

An overall view of the Rand text and catalog system described in RM-4390 for processing natural language text for computer storage in large files. The system provides freedom to reorganize the files at will. Organization is based on the dependency tree. Data within any one class may be encoded in any form, disregarding the rest of the file, and the nature of the coding is indicated on the catalog map (index). Catalogs can be nested, and each catalog may be structured separately. A valuable space-saving device is the null datum, in which headings without any data fulfill their organizing role without occupying any physical space. Computer programs convert text into ist internal representation. Formats have been defined for 7-bit magnetic tape and 36-bit-word core storage, and others will be added. Catalog transformation schemes are also planned for the future.

Document Details

  • Copyright: RAND Corporation
  • Availability: Web Only
  • Year: 1966
  • Pages: 35
  • Document Number: P-3476

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The catalog: a flexible structure for data storage. Santa Monica, CA: RAND Corporation, 1966. https://www.rand.org/pubs/papers/P3476.html.
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