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Method for using deferred column retrieval to improve row retrieval and query performance of OLE DB applications

  • US 7,386,563 B1
  • Filed: 12/11/2003
  • Issued: 06/10/2008
  • Est. Priority Date: 12/11/2003
  • Status: Active Grant
First Claim
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1. In a Data Management System (DBMS) wherein an Enterprise Database Server operating under a Master Control Program (MCP) operates through a Data Access Module to a Windows™

  • client application program having a consumer'"'"'s data buffer, said system holding a base table of information in a Database, a method for managing database queries for data access by managing overhead operations which no longer require access to said base table in said database, said method comprising the steps of;

    (a) providing an index structure having index files wherein each index file contains a Key and Pointer which points to a record in said base table,(a1) fetching a limited set of columns from said base table;

    (b) issuing a database fetch request from said index structure wherein step (b) includes the step of;

    (b1) retrieving column information from said index structure;

    (c) enabling Online Embedded Database (OLE DB) applications to access selected columns present in said index structure while eliminating the need to access said base table.

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