Patent ID: 6327587
Filing Date: 2001-12-04
Classification: G06F,Y10S

Abstract:
A system for exploring relationships in data stored in a computer readable medium, comprising:first logic to maintain sets of data in a computer readable medium, including at least one intensional expression and one extensional expression of at least one set resulting from an evaluation of a first query;second logic to transform a second query into a set program;third logic, cooperating with the first logic, to determine whether a sub-expression of the set program is satisfied by a set maintained by the first logic;fourth logic, cooperating with the third logic, to remove the sub-expression from the set program and to use the set maintained by the first logic that satisfies the sub-expression of the set program; andfifth logic for removing at least one of the sets from the computer readable medium based on at least one of usage history and set size.