Layered index with a basic unbalanced partitioned index that allows a balanced structure of blocks
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United States of America Patent
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Jan 16, 2001
Issued Date -
N/A
app pub date -
Jan 22, 1999
filing date -
Jul 26, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
In a database file management system for accessing data records and being executed on data processing system. The data records are linked to a trie index that is arranged in blocks and being stored in a storage medium. The trie index enables accessing or updating the data records by key or keys and being susceptible to an unbalanced structure of blocks. There is provided a method for constructing a layered index arranged in blocks, which includes the steps of providing the trie index and constructing a representative index over the representative keys of the trie index. The layered index enables accessing or updating the data records by key or keys and it constitutes a balanced structure of blocks.
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