What changed
Large changing ordered indexes gained a page-efficient balanced data structure with analyzed operations.
Scientific scope
1972 two-author B-tree paper; B+ variants and concurrent or database-specific implementations excluded.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. This is the 1972 Acta Informatica paper and its B-tree organization. Later variants such as B+ trees, concurrent indexes and database-specific implementations remain distinct.
Contributors
- Rudolf Bayer · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
- Edward M. McCreight · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
- Bayer and McCreight, Organization and Maintenance of Large Ordered Indexes
- CiNii: Organization and Maintenance of Large Ordered Indexes
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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