| 摘要 |
A system, method, and computer program for storing a plurality of usage conditions to a data set for retrieval by a single query statement, comprising the steps of converting a usage condition into a first normal form representation, minimizing said first normal form representation, transforming said minimized first normal form representation into a second normal form representation, and storing said second normal form representation in said data set. The method wherein the steps comprising said storing step are repeated until each said usage condition is stored in to said data set and appropriate means and computer-readable instructions.
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