Datebase Device, Database Management Method, Data Structure Of Database, Database Management Program, And Computer-Readable Storage Medium Storing Same Program
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United States of America Patent
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N/A
Issued Date -
Apr 17, 2008
app pub date -
Oct 27, 2005
filing date -
Oct 28, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
When a record inserting section inserts a record having a new column value, the record inserting section registers the column value in a CVT such that an extendible array is extended; registers, in a history table, a history value indicating a chronological sequence of array extension; registers, in a coefficient table, coefficients of a linear function for calculating an offset of an element in an subarray; registers an initial value in a record number table; and inserts as a key value a 2-tuple expression of the history value and the offset of the element of the extendible array into RDT. This makes it possible to dynamically add, upon operation, a record having a new column value and to register only an existing record, thereby realizing a relational database allowing for fast record retrieval.
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