Systems and methods for the implementation of unordered and ordered collections in a data store
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United States of America Patent
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Oct 14, 2008
Grant Date -
Aug 11, 2005
app pub date -
Dec 30, 2004
filing date -
Feb 10, 2004
priority date (Note) -
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Abstract
Several embodiments of the present invention are directed to systems and methods for extending the UDT framework of an extended relational data store (ERDS) to include support for unordered collections (multisets) and ordered collection (lists). More specifically, several embodiments of the present invention use an UDT infrastructure, CLR generics, and a new UNNEST operator to create and utilize a special type abstraction for collections that is simultaneously a scalar and a relation. As a scalar, this collection type can be processed by all parts of the data store engine that understand scalars (including but not limited to the client stack) and, as a relation, this collection type is queriable like any other type of relation.
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