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STATISTICS COLLECTION USING PATH-IDENTIFIERS FOR RELATIONAL DATABASES

  • US 20100011030A1
  • Filed: 09/11/2009
  • Published: 01/14/2010
  • Est. Priority Date: 05/16/2006
  • Status: Active Grant
First Claim
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1. A method, on an information processing system, for collecting statistics associated with data in a database, the method comprising:

  • determining an amount of memory needed to collect statistics for data associated with a defined data type in a relational database, wherein the defined data type is based upon a mark-up language using a tree structure with one or more root-to-node paths therein;

    allocating the amount of memory as determined for collecting the statistics for the data of the defined data type; and

    performing a collection of statistics 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;

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