User-defined aggregate functions in database systems without...

Details User-defined aggregate functions in database systems without... User-defined aggregate functions in database systems without...

2007-02-20

2007-02-20

Le, Debbie M. (Department: 2168)

Data processing: database and file management or data structures

Database design

Data structure types

Reexamination Certificate

active

10173402

ABSTRACT:
A computer-implemented method of using a database management system (DBMS) for providing an aggregate of a plurality of entities, constructing an aggregate of said plurality of entities in a memory to provide a result, and returning the result from the memory. Constructing the aggregate in memory includes storing in the memory a plurality of intermediate aggregation results each associated with a unique identifier. The unique identifier for each intermediate result is stored in the DBMS. Each unique identifier indicates information identifying a position within a sequence of generating the intermediate result and a pointer to a location in the memory where that intermediate result is stored.

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T. Johnson, et al, “Extending Complex Ad-Hoc OLAP,” ACM, Nov. 1999, pp. 170-179.

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