8. A computer readable storage medium containing a program which, when executed, performs an operation comprising: receiving a rule set container storing a plurality of abstract rules, wherein each abstract rule includes (i) a conditional statement and (ii) a consequential statement defining a result returned by an abstract rule for a data record supplied to the abstract rule satisfying the conditional statement; identifying a first abstract rule among the plurality of abstract rules, wherein the consequential statement of the first abstract rule specifies to reject data records that satisfy the conditional statement of the first abstract rule from being processed by other abstract rules among the plurality of abstract rules; identifying a second abstract rule among the plurality of abstract rules, wherein the consequential statement of the second abstract rule specifies an inference message to return for data records that satisfy the conditional statement of the second abstract rule; transforming the first abstract rule and the second abstract rule into a single executable rule, wherein the single executable rule includes the consequential statement of the second abstract rule and a new conditional statement, the new conditional statement comprising the conditional statement of the second abstract rule and an exclusionary conditional statement that excludes data records satisfying the conditional statement of the first abstract rule; and storing the single executable rule for execution against a database query result.
12. The computer readable storage medium claim 8 , wherein the inference message specifies a recommendation for medical treatment.