Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 5, 2009
Patent Application Number
10366261
Date Filed
February 12, 2003
Patent Primary Examiner
Patent abstract
In cases where two or more database tables can be joined by more than one relationship or criterion on the row values of selected columns, to produce what is effectively a wider table, there may result an ambiguity of which join should be used. The invention provides a means of join disambiguation that is rule-driven. The user is relieved of understanding the details of how the disambiguation is being done. The system described in this invention makes the choice of which join to use based on clear transformation rules which relate to folders of the tables and their relationships.
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