Statistics collection using path-identifiers for relational...

Details Statistics collection using path-identifiers for relational... Statistics collection using path-identifiers for relational...

2006-05-16

2009-11-03

Nguyen, Cam-Linh (Department: 2161)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C707S793000, C707S793000, C707S793000

Reexamination Certificate

active

07613682

ABSTRACT:
Disclosed are a method for collecting statistics associated with data in a database. The method comprises determining an amount of memory needed to collect statistics for data associated with a defined data type in a relational database. The defined data type is based upon a mark-up language using a tree structure with one or more root-to-node paths therein. The amount of memory as determined is allocated for collecting the statistics for the data of the defined data type. A statistics collection is performed for the data of the defined data type in a single pass through the database and within the amount of memory which has been allocated.

REFERENCES:
patent: 2003/0158842 (2003-08-01), Levy et al.
patent: 2004/0267691 (2004-12-01), Vasudeva

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