Index with entries that store the key of a row and all non-key values of the row
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United States of America Patent
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Oct 3, 2000
Issued Date -
N/A
app pub date -
Aug 25, 1998
filing date -
Jul 9, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for efficiently storing and retrieving data in a database using index-only tables is disclosed. Storing a row of data in a database using index-only tables involves storing in a leaf node an index entry that includes a key value along with all other values in the row of data. If the row of data exceeds a predetermined size, then a portion of the row of data is stored in a user specified overflow area. Retrieving a row of data from an index-only table for a user-supplied key involves identifying a leaf node for the key, and reading a row of data from the index entry and any remaining portion from the overflow area when the row exceeds the predetermined size.
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