Method and apparatus for presenting query plans

Details Method and apparatus for presenting query plans Method and apparatus for presenting query plans

2007-02-27

2007-02-27

Mofiz, Apu (Department: 2161)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

09608976

ABSTRACT:
An execution plan of a query for a parallel database system is determined. In one arrangement, the parallel database system is a relational database management system. The execution plan of the query is determined by an optimizer program. Execution plans are inserted into one or more explain tables that are accessible by a visual explain and compare module to display the steps of the execution plan in a graphical user interface. Parallel execution of steps of the execution plan can be depicted in the graphical user interface. Further, plural execution plans for a given query under different conditions may be displayed for comparison.

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