Method and apparatus for evaluating index predicates on complex data types using virtual indexed streams
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United States of America Patent
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Jan 13, 2004
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app pub date -
Dec 28, 1999
filing date -
Dec 28, 1999
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Abstract
A method, apparatus, article of manufacture, and a memory structure for providing access to abstract data types using an index providing a tuple. The method comprises the steps of accepting a database query; generating an index predicate from the database query; and determining a tuple from an index using the index predicate. The tuple is associated with an abstract or complex data type responsive to the database query. A data stream is initialized with the index predicate; and the tuple is returned in the data stream. The apparatus comprises means for performing the above method steps, and the article of manufacture comprises a medium tangibly embodying computer instructions for performing these method steps.
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