Main Schema-External Schema Interaction in Hierarchically Organized Data Bases

Summary: Defines a class of external schemas derivable from a tree-structured main schema in hierarchical databases. The class's properties enable a processing interface that lets predicates on the external schema be evaluated inside an occurrence structure disciplined by the main schema. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: 2053
Venue: SIGMOD
Year: 1977
Pagerank: -
Overall Rank: 14,375 | 0.10%
DOI: -

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Authors

1. A. G. Dale
2. N. B. Dale

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